[2026-04-06 00:03:47] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'corporate' | IP: 47.128.52.95
[2026-04-06 00:03:47] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.95
[2026-04-06 00:13:59] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 1 AND co.course_type = 'corporate' | IP: 47.128.52.32
[2026-04-06 00:13:59] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 1 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 47.128.52.32
[2026-04-06 01:33:13] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 7 | IP: 47.128.52.35
[2026-04-06 01:33:13] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 7 GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 47.128.52.35
[2026-04-06 02:12:15] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 9 AND co.course_type = 'free' | IP: 15.235.96.18
[2026-04-06 02:12:15] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 9 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 15.235.96.18
[2026-04-06 03:00:59] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 7 AND co.course_type = 'free' | IP: 47.128.52.36
[2026-04-06 03:00:59] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 7 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.36
[2026-04-06 03:05:26] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 9 AND co.course_type = 'corporate' | IP: 47.128.52.53
[2026-04-06 03:05:26] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 9 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.53
[2026-04-06 03:37:48] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 10 AND co.course_type = 'free' | IP: 47.128.53.100
[2026-04-06 03:37:48] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 10 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.53.100
[2026-04-06 03:41:53] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 5 AND co.course_type = 'free' | IP: 47.128.52.71
[2026-04-06 03:41:53] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 5 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.71
[2026-04-06 03:45:44] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 8 AND co.course_type = 'free' | IP: 47.128.52.84
[2026-04-06 03:45:44] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 8 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.84
[2026-04-06 04:40:56] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 8 AND co.course_type = 'free' | IP: 47.128.52.62
[2026-04-06 04:40:56] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 8 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.62
[2026-04-06 05:00:17] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 9 AND co.course_type = 'free' | IP: 148.113.128.94
[2026-04-06 05:00:17] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 9 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 148.113.128.94
[2026-04-06 05:47:48] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 10 AND co.course_type = 'free' | IP: 47.128.52.34
[2026-04-06 05:47:48] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 10 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 47.128.52.34
[2026-04-06 05:51:41] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 1 AND co.course_type = 'free' | IP: 47.128.52.92
[2026-04-06 05:51:41] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 1 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.92
[2026-04-06 06:54:32] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 3 AND co.course_type = 'paid' | IP: 47.128.52.72
[2026-04-06 06:54:32] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 3 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.72
[2026-04-06 06:58:28] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 8 AND co.course_type = 'corporate' | IP: 47.128.52.34
[2026-04-06 06:58:28] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 8 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.34
[2026-04-06 07:02:17] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'corporate' | IP: 47.128.52.81
[2026-04-06 07:02:17] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.81
[2026-04-06 07:10:14] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'corporate' | IP: 47.128.52.78
[2026-04-06 07:10:14] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.78
[2026-04-06 07:14:18] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.course_type = 'corporate' | IP: 47.128.52.96
[2026-04-06 07:14:18] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 47.128.52.96
[2026-04-06 07:22:28] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 5 AND co.course_type = 'corporate' | IP: 47.128.53.101
[2026-04-06 07:22:28] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 5 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.53.101
[2026-04-06 07:26:29] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 5 AND co.course_type = 'corporate' | IP: 47.128.52.62
[2026-04-06 07:26:29] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 5 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.62
[2026-04-06 08:04:23] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 1 AND co.course_type = 'paid' | IP: 47.128.52.71
[2026-04-06 08:04:23] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 1 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.71
[2026-04-06 08:08:23] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 10 AND co.course_type = 'corporate' | IP: 47.128.52.81
[2026-04-06 08:08:23] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 10 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.81
[2026-04-06 08:11:02] [DB_QUERY_ERROR] MSG: Unknown column 'use_yn' in 'where clause' | SQL: SELECT course_id, course_title FROM lms_course WHERE use_yn='Y' ORDER BY course_title | IP: 127.0.0.1
[2026-04-06 08:12:24] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 1 AND co.course_type = 'paid' | IP: 47.128.52.97
[2026-04-06 08:12:24] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 1 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.97
[2026-04-06 08:13:40] [DB_QUERY_ERROR] MSG: Unknown column 'er.is_retake' in 'field list' | SQL:  SELECT er.enroll_id, er.exam_type, er.score, er.pass_yn, er.attempt_no, er.submit_at, er.graded_by, er.is_retake, er.retake_reason, er.copy_detect_yn FROM lms_exam_result er INNER JOIN ( SELECT enroll_id, exam_type, MAX(result_id) as max_id FROM lms_exam_result WHERE enroll_id IN (13,12,11,10,9,8,7,6,5,4,3,2,1) GROUP BY enroll_id, exam_type ) latest ON er.result_id = latest.max_id  | IP: 211.114.48.196
[2026-04-06 08:16:25] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 10 AND co.course_type = 'corporate' | IP: 47.128.52.33
[2026-04-06 08:16:25] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 10 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.33
[2026-04-06 08:17:30] [DB_QUERY_ERROR] MSG: Table 'db_lms_area.lms_exam_retake_request' doesn't exist | SQL:  SELECT COUNT(*) FROM lms_exam_retake_request rr LEFT JOIN lms_member m ON rr.member_id = m.member_id WHERE rr.del_yn='N'  | IP: 211.114.48.196
[2026-04-06 08:17:30] [DB_QUERY_ERROR] MSG: Table 'db_lms_area.lms_exam_retake_request' doesn't exist | SQL:  SELECT rr.*, m.user_id, m.user_name, c.course_title, cl.class_name, ep.paper_title, ep.exam_type AS paper_exam_type, adm.admin_name AS approver_name FROM lms_exam_retake_request rr LEFT JOIN lms_member m ON rr.member_id = m.member_id LEFT JOIN lms_course c ON rr.course_id = c.course_id LEFT JOIN lms_class cl ON rr.class_id = cl.class_id LEFT JOIN lms_exam_paper ep ON rr.paper_id = ep.paper_id LEFT JOIN lms_admin adm ON rr.approved_by = adm.admin_id WHERE rr.del_yn='N' ORDER BY FIELD(rr.status,'PENDING','APPROVED','REJECTED'), rr.created_at DESC LIMIT 0, 20  | IP: 211.114.48.196
[2026-04-06 08:17:30] [DB_QUERY_ERROR] MSG: Table 'db_lms_area.lms_exam_retake_request' doesn't exist | SQL: SELECT COUNT(*) FROM lms_exam_retake_request WHERE del_yn='N' | IP: 211.114.48.196
[2026-04-06 08:17:30] [DB_QUERY_ERROR] MSG: Table 'db_lms_area.lms_exam_retake_request' doesn't exist | SQL: SELECT COUNT(*) FROM lms_exam_retake_request WHERE del_yn='N' AND status='PENDING' | IP: 211.114.48.196
[2026-04-06 08:17:30] [DB_QUERY_ERROR] MSG: Table 'db_lms_area.lms_exam_retake_request' doesn't exist | SQL: SELECT COUNT(*) FROM lms_exam_retake_request WHERE del_yn='N' AND status='APPROVED' | IP: 211.114.48.196
[2026-04-06 08:17:30] [DB_QUERY_ERROR] MSG: Table 'db_lms_area.lms_exam_retake_request' doesn't exist | SQL: SELECT COUNT(*) FROM lms_exam_retake_request WHERE del_yn='N' AND status='REJECTED' | IP: 211.114.48.196
[2026-04-06 09:11:34] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 8 | IP: 47.128.53.100
[2026-04-06 09:11:34] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 8 GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 47.128.53.100
[2026-04-06 09:15:36] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 8 | IP: 47.128.52.48
[2026-04-06 09:15:36] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 8 GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 47.128.52.48
[2026-04-06 09:37:36] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'paid' | IP: 47.128.53.104
[2026-04-06 09:37:36] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.53.104
[2026-04-06 09:41:33] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'paid' | IP: 47.128.52.83
[2026-04-06 09:41:33] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 47.128.52.83
[2026-04-06 09:45:54] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'paid' | IP: 47.128.52.96
[2026-04-06 09:45:54] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.96
[2026-04-06 09:50:02] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'paid' | IP: 47.128.52.36
[2026-04-06 09:50:02] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 47.128.52.36
[2026-04-06 10:23:22] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 8 AND co.course_type = 'free' | IP: 47.128.52.3
[2026-04-06 10:23:22] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'paid' | IP: 47.128.53.101
[2026-04-06 10:23:22] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 8 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.3
[2026-04-06 10:23:22] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 47.128.53.101
[2026-04-06 10:35:25] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'paid' | IP: 47.128.52.32
[2026-04-06 10:35:25] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 47.128.52.32
[2026-04-06 10:39:18] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 8 AND co.course_type = 'free' | IP: 47.128.52.97
[2026-04-06 10:39:18] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 8 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.97
[2026-04-06 11:30:19] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 3 AND co.course_type = 'paid' | IP: 47.128.52.94
[2026-04-06 11:30:19] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 3 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.94
[2026-04-06 13:01:56] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 10 AND co.course_type = 'free' | IP: 47.128.52.34
[2026-04-06 13:01:56] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 10 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 47.128.52.34
[2026-04-06 13:06:11] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 9 AND co.course_type = 'paid' | IP: 47.128.52.30
[2026-04-06 13:06:11] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 9 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 47.128.52.30
[2026-04-06 13:09:47] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 1 AND co.course_type = 'free' | IP: 47.128.53.111
[2026-04-06 13:09:47] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 1 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 47.128.53.111
[2026-04-06 13:13:45] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 9 AND co.course_type = 'free' | IP: 47.128.52.72
[2026-04-06 13:13:45] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 9 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.72
[2026-04-06 13:17:45] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 2 AND co.course_type = 'paid' | IP: 47.128.52.72
[2026-04-06 13:17:45] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 2 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.72
[2026-04-06 13:25:47] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 9 AND co.course_type = 'paid' | IP: 47.128.52.84
[2026-04-06 13:25:47] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 9 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 47.128.52.84
[2026-04-06 13:29:37] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 7 AND co.course_type = 'corporate' | IP: 148.113.130.179
[2026-04-06 13:29:37] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 7 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 148.113.130.179
[2026-04-06 14:17:31] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'corporate' | IP: 47.128.52.79
[2026-04-06 14:17:31] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.79
[2026-04-06 14:21:44] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.course_type = 'paid' | IP: 47.128.52.33
[2026-04-06 14:21:44] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 47.128.52.33
[2026-04-06 14:25:27] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'paid' | IP: 47.128.52.254
[2026-04-06 14:25:27] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.254
[2026-04-06 14:29:30] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.course_type = 'paid' | IP: 47.128.53.100
[2026-04-06 14:29:30] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 47.128.53.100
[2026-04-06 15:40:23] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 8 AND co.course_type = 'paid' | IP: 47.128.53.105
[2026-04-06 15:40:23] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 8 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.53.105
[2026-04-06 15:44:34] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'free' | IP: 47.128.52.78
[2026-04-06 15:44:34] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 47.128.52.78
[2026-04-06 16:21:16] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 7 AND co.course_type = 'corporate' | IP: 54.39.0.129
[2026-04-06 16:21:16] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 7 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 54.39.0.129
[2026-04-06 16:31:29] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 8 AND co.course_type = 'corporate' | IP: 47.128.52.43
[2026-04-06 16:31:29] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 8 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 47.128.52.43
[2026-04-06 17:15:52] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 5 AND co.course_type = 'paid' | IP: 47.128.52.52
[2026-04-06 17:15:52] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 5 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 47.128.52.52
[2026-04-06 17:19:52] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 7 AND co.course_type = 'paid' | IP: 47.128.52.38
[2026-04-06 17:19:52] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 7 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 47.128.52.38
[2026-04-06 17:23:52] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 2 AND co.course_type = 'corporate' | IP: 47.128.52.79
[2026-04-06 17:23:52] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 2 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 47.128.52.79
[2026-04-06 17:36:56] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 7 AND co.course_type = 'corporate' | IP: 142.44.225.195
[2026-04-06 17:36:56] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 7 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 142.44.225.195
[2026-04-06 18:12:22] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 3 AND co.course_type = 'corporate' | IP: 47.128.52.58
[2026-04-06 18:12:22] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 3 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.58
[2026-04-06 18:16:14] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 1 AND co.course_type = 'corporate' | IP: 47.128.52.96
[2026-04-06 18:16:14] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 1 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.96
[2026-04-06 18:20:14] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 4 AND co.course_type = 'free' | IP: 47.128.52.71
[2026-04-06 18:20:14] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 4 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.71
[2026-04-06 18:24:18] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 4 AND co.course_type = 'free' | IP: 47.128.52.95
[2026-04-06 18:24:18] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 4 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.95
[2026-04-06 18:24:36] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 3 AND co.course_type = 'corporate' | IP: 47.128.52.91
[2026-04-06 18:24:36] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 3 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.91
[2026-04-06 18:43:37] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 7 AND co.course_type = 'free' | IP: 167.114.139.82
[2026-04-06 18:43:37] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 7 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 167.114.139.82
[2026-04-06 18:58:00] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 1 AND co.course_type = 'free' | IP: 47.128.52.60
[2026-04-06 18:58:00] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 1 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.60
[2026-04-06 19:00:28] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 7 AND co.course_type = 'free' | IP: 167.114.139.88
[2026-04-06 19:00:28] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 7 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 167.114.139.88
[2026-04-06 19:01:58] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 1 AND co.course_type = 'free' | IP: 47.128.52.87
[2026-04-06 19:01:58] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 1 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.87
[2026-04-06 19:15:36] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'corporate' | IP: 54.39.6.95
[2026-04-06 19:15:36] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 54.39.6.95
[2026-04-06 19:18:14] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 2 AND co.course_type = 'free' | IP: 47.128.52.4
[2026-04-06 19:18:14] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 2 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 47.128.52.4
[2026-04-06 19:22:19] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 4 AND co.course_type = 'free' | IP: 47.128.52.37
[2026-04-06 19:22:19] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 4 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 47.128.52.37
[2026-04-06 19:26:21] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 4 AND co.course_type = 'free' | IP: 47.128.52.57
[2026-04-06 19:26:21] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 4 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 47.128.52.57
[2026-04-06 19:26:22] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 2 AND co.course_type = 'free' | IP: 47.128.53.107
[2026-04-06 19:26:22] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 2 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 47.128.53.107
[2026-04-06 19:29:40] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'corporate' | IP: 15.235.96.92
[2026-04-06 19:29:40] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 15.235.96.92
[2026-04-06 19:37:29] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'corporate' | IP: 51.222.95.144
[2026-04-06 19:37:29] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 51.222.95.144
[2026-04-06 19:42:02] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 7 AND co.course_type = 'free' | IP: 15.235.27.140
[2026-04-06 19:42:02] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 7 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 15.235.27.140
[2026-04-06 19:49:09] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'free' | IP: 51.222.95.119
[2026-04-06 19:49:09] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 51.222.95.119
[2026-04-06 19:54:28] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'free' | IP: 148.113.130.245
[2026-04-06 19:54:28] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 148.113.130.245
[2026-04-06 19:58:41] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 5 AND co.course_type = 'corporate' | IP: 15.235.98.156
[2026-04-06 19:58:41] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 5 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 15.235.98.156
[2026-04-06 20:02:43] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 5 AND co.course_type = 'free' | IP: 15.235.98.186
[2026-04-06 20:02:43] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 5 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 15.235.98.186
[2026-04-06 20:07:03] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 5 AND co.course_type = 'free' | IP: 54.39.0.60
[2026-04-06 20:07:03] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 5 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 54.39.0.60
[2026-04-06 20:11:13] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 5 AND co.course_type = 'paid' | IP: 54.39.89.206
[2026-04-06 20:11:13] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 5 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 54.39.89.206
[2026-04-06 20:15:00] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 5 AND co.course_type = 'paid' | IP: 15.235.98.184
[2026-04-06 20:15:00] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 5 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 15.235.98.184
[2026-04-06 20:18:51] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 4 AND co.course_type = 'corporate' | IP: 15.235.27.63
[2026-04-06 20:18:51] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 4 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 15.235.27.63
[2026-04-06 20:21:43] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 4 AND co.course_type = 'corporate' | IP: 47.128.52.41
[2026-04-06 20:21:43] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 4 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.41
[2026-04-06 20:22:37] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 4 AND co.course_type = 'corporate' | IP: 51.222.168.22
[2026-04-06 20:22:37] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 4 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 51.222.168.22
[2026-04-06 20:25:38] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 4 AND co.course_type = 'corporate' | IP: 47.128.52.93
[2026-04-06 20:25:38] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 4 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.93
[2026-04-06 20:26:35] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 4 AND co.course_type = 'free' | IP: 51.222.168.107
[2026-04-06 20:26:35] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 4 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 51.222.168.107
[2026-04-06 20:30:19] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 4 AND co.course_type = 'free' | IP: 54.39.89.4
[2026-04-06 20:30:19] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 4 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 54.39.89.4
[2026-04-06 20:33:59] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 4 AND co.course_type = 'free' | IP: 142.44.233.103
[2026-04-06 20:33:59] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 4 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 142.44.233.103
[2026-04-06 20:37:35] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 4 AND co.course_type = 'paid' | IP: 54.39.89.104
[2026-04-06 20:37:35] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 4 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 54.39.89.104
[2026-04-06 20:41:13] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 3 AND co.course_type = 'corporate' | IP: 15.235.96.78
[2026-04-06 20:41:13] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 3 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 15.235.96.78
[2026-04-06 20:44:55] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 3 AND co.course_type = 'corporate' | IP: 51.222.95.231
[2026-04-06 20:44:55] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 3 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 51.222.95.231
[2026-04-06 20:48:50] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 3 AND co.course_type = 'corporate' | IP: 51.161.65.9
[2026-04-06 20:48:50] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 3 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 51.161.65.9
[2026-04-06 20:53:12] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 3 AND co.course_type = 'free' | IP: 142.44.220.228
[2026-04-06 20:53:12] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 3 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 142.44.220.228
[2026-04-06 20:57:55] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 3 AND co.course_type = 'paid' | IP: 142.44.233.123
[2026-04-06 20:57:55] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 3 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 142.44.233.123
[2026-04-06 21:03:09] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 3 AND co.course_type = 'paid' | IP: 15.235.27.128
[2026-04-06 21:03:09] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 3 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 15.235.27.128
[2026-04-06 21:06:07] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 1 AND co.course_type = 'corporate' | IP: 47.128.52.95
[2026-04-06 21:06:07] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 1 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.95
[2026-04-06 21:07:59] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 2 AND co.course_type = 'corporate' | IP: 51.161.37.41
[2026-04-06 21:07:59] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 2 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 51.161.37.41
[2026-04-06 21:12:28] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 2 AND co.course_type = 'free' | IP: 142.44.233.213
[2026-04-06 21:12:28] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 2 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 142.44.233.213
[2026-04-06 21:17:15] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 2 AND co.course_type = 'paid' | IP: 51.222.95.174
[2026-04-06 21:17:15] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 2 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 51.222.95.174
[2026-04-06 21:22:18] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 2 AND co.course_type = 'paid' | IP: 15.235.27.4
[2026-04-06 21:22:18] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 2 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 15.235.27.4
[2026-04-06 21:26:53] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 2 AND co.course_type = 'paid' | IP: 51.222.95.162
[2026-04-06 21:26:53] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 2 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 51.222.95.162
[2026-04-06 21:27:24] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 5 AND co.course_type = 'free' | IP: 47.128.52.69
[2026-04-06 21:27:24] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 5 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.69
[2026-04-06 21:31:25] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 9 AND co.course_type = 'paid' | IP: 47.128.52.32
[2026-04-06 21:31:25] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 9 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.32
[2026-04-06 21:31:44] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 10 AND co.course_type = 'corporate' | IP: 142.44.220.81
[2026-04-06 21:31:44] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 10 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 142.44.220.81
[2026-04-06 21:36:16] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 10 AND co.course_type = 'corporate' | IP: 142.44.228.182
[2026-04-06 21:36:16] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 10 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 142.44.228.182
[2026-04-06 21:39:30] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 5 AND co.course_type = 'free' | IP: 47.128.52.58
[2026-04-06 21:39:30] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 5 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.58
[2026-04-06 21:41:02] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 10 AND co.course_type = 'free' | IP: 51.161.37.179
[2026-04-06 21:41:02] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 10 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 51.161.37.179
[2026-04-06 21:43:30] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 9 AND co.course_type = 'paid' | IP: 47.128.53.104
[2026-04-06 21:43:30] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 9 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.53.104
[2026-04-06 21:45:56] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 10 AND co.course_type = 'paid' | IP: 54.39.203.242
[2026-04-06 21:45:56] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 10 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 54.39.203.242
[2026-04-06 21:47:31] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 3 AND co.course_type = 'paid' | IP: 47.128.52.93
[2026-04-06 21:47:31] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 3 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 47.128.52.93
[2026-04-06 21:51:23] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 10 AND co.course_type = 'paid' | IP: 15.235.27.249
[2026-04-06 21:51:23] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 10 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 15.235.27.249
[2026-04-06 21:58:31] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'free' | IP: 54.39.89.61
[2026-04-06 21:58:31] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 54.39.89.61
[2026-04-06 22:03:32] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 5 AND co.course_type = 'free' | IP: 15.235.27.176
[2026-04-06 22:03:32] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 5 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 15.235.27.176
[2026-04-06 22:08:23] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 5 AND co.course_type = 'paid' | IP: 54.39.203.172
[2026-04-06 22:08:23] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 5 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 54.39.203.172
[2026-04-06 22:08:23] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 9 AND co.course_type = 'corporate' | IP: 47.128.52.96
[2026-04-06 22:08:23] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 9 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.96
[2026-04-06 22:08:23] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 2 AND co.course_type = 'corporate' | IP: 47.128.52.83
[2026-04-06 22:08:23] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 2 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.83
[2026-04-06 22:12:36] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 4 AND co.course_type = 'paid' | IP: 47.128.52.69
[2026-04-06 22:12:36] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 4 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 47.128.52.69
[2026-04-06 22:13:04] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 4 AND co.course_type = 'corporate' | IP: 54.39.89.237
[2026-04-06 22:13:04] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 4 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 54.39.89.237
[2026-04-06 22:17:37] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 3 AND co.course_type = 'paid' | IP: 51.161.65.137
[2026-04-06 22:17:37] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 3 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 51.161.65.137
[2026-04-06 22:20:21] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 9 AND co.course_type = 'corporate' | IP: 47.128.52.62
[2026-04-06 22:20:21] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 9 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.62
[2026-04-06 22:21:43] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 5 AND co.course_type = 'corporate' | IP: 142.44.228.29
[2026-04-06 22:21:43] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 5 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 142.44.228.29
[2026-04-06 22:24:23] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 2 AND co.course_type = 'corporate' | IP: 47.128.52.53
[2026-04-06 22:24:23] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 2 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.53
[2026-04-06 22:25:56] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 5 AND co.course_type = 'corporate' | IP: 51.161.65.129
[2026-04-06 22:25:56] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 5 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 51.161.65.129
[2026-04-06 22:29:54] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 4 AND co.course_type = 'paid' | IP: 54.39.0.238
[2026-04-06 22:29:54] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 4 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 54.39.0.238
[2026-04-06 22:34:18] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 4 AND co.course_type = 'paid' | IP: 167.114.139.109
[2026-04-06 22:34:18] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 4 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 167.114.139.109
[2026-04-06 22:38:46] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 3 AND co.course_type = 'free' | IP: 142.44.228.72
[2026-04-06 22:38:46] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 3 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 142.44.228.72
[2026-04-06 22:42:30] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 3 AND co.course_type = 'free' | IP: 142.44.228.171
[2026-04-06 22:42:30] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 3 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 142.44.228.171
[2026-04-06 22:46:16] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 2 AND co.course_type = 'corporate' | IP: 142.44.220.45
[2026-04-06 22:46:16] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 2 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 142.44.220.45
[2026-04-06 22:49:42] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 2 AND co.course_type = 'corporate' | IP: 51.161.65.194
[2026-04-06 22:49:42] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 2 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 51.161.65.194
[2026-04-06 22:53:47] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 2 AND co.course_type = 'free' | IP: 148.113.128.46
[2026-04-06 22:53:47] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 2 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 148.113.128.46
[2026-04-06 22:57:53] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 2 AND co.course_type = 'free' | IP: 51.161.65.201
[2026-04-06 22:57:53] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 2 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 51.161.65.201
[2026-04-06 23:01:57] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 7 AND co.course_type = 'paid' | IP: 148.113.128.205
[2026-04-06 23:01:57] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 7 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 148.113.128.205
[2026-04-06 23:05:50] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 7 AND co.course_type = 'paid' | IP: 54.39.0.83
[2026-04-06 23:05:50] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 7 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 54.39.0.83
[2026-04-06 23:09:47] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'paid' | IP: 148.113.130.158
[2026-04-06 23:09:47] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 6 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 148.113.130.158
[2026-04-06 23:14:02] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 10 AND co.course_type = 'corporate' | IP: 142.44.233.35
[2026-04-06 23:14:02] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 10 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 142.44.233.35
[2026-04-06 23:18:13] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 10 AND co.course_type = 'free' | IP: 15.235.98.230
[2026-04-06 23:18:13] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 10 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 15.235.98.230
[2026-04-06 23:22:27] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 10 AND co.course_type = 'paid' | IP: 15.235.27.207
[2026-04-06 23:22:27] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 10 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 15.235.27.207
[2026-04-06 23:22:45] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 10 AND co.course_type = 'paid' | IP: 47.128.52.48
[2026-04-06 23:22:45] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 10 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 47.128.52.48
[2026-04-06 23:26:49] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 5 AND co.course_type = 'corporate' | IP: 47.128.52.30
[2026-04-06 23:26:49] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 5 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 47.128.52.30
[2026-04-06 23:26:54] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 1 AND co.course_type = 'corporate' | IP: 54.39.6.177
[2026-04-06 23:26:54] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 1 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 54.39.6.177
[2026-04-06 23:30:44] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.course_type = 'free' | IP: 47.128.52.61
[2026-04-06 23:30:44] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 47.128.52.61
[2026-04-06 23:31:36] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 1 AND co.course_type = 'corporate' | IP: 142.44.228.125
[2026-04-06 23:31:36] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 1 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 142.44.228.125
[2026-04-06 23:34:46] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 10 AND co.course_type = 'paid' | IP: 47.128.52.97
[2026-04-06 23:34:46] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 10 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 47.128.52.97
[2026-04-06 23:35:28] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 1 AND co.course_type = 'corporate' | IP: 54.39.6.89
[2026-04-06 23:35:28] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 1 AND co.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 54.39.6.89
[2026-04-06 23:38:45] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.course_type = 'free' | IP: 47.128.52.44
[2026-04-06 23:38:45] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 47.128.52.44
[2026-04-06 23:39:06] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 1 AND co.course_type = 'free' | IP: 142.44.220.189
[2026-04-06 23:39:06] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 1 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 142.44.220.189
[2026-04-06 23:43:02] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 1 AND co.course_type = 'free' | IP: 54.39.89.35
[2026-04-06 23:43:02] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 1 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 54.39.89.35
[2026-04-06 23:46:38] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 1 AND co.course_type = 'free' | IP: 54.39.210.56
[2026-04-06 23:46:38] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 1 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 54.39.210.56
[2026-04-06 23:50:54] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 1 AND co.course_type = 'paid' | IP: 15.235.98.208
[2026-04-06 23:50:54] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 1 AND co.course_type = 'paid' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 15.235.98.208
[2026-04-06 23:57:04] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'where clause' | SQL:  SELECT COUNT(DISTINCT co.course_id) AS c FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 10 AND co.course_type = 'free' | IP: 54.39.89.208
[2026-04-06 23:57:04] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.course_summary, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, co.created_at, ca.category_name, COUNT(DISTINCT e.enroll_id) AS enroll_cnt FROM lms_course co LEFT JOIN lms_category ca ON co.category_id = ca.category_id LEFT JOIN lms_class cl ON cl.course_id = co.course_id AND cl.del_yn='N' LEFT JOIN lms_enrollment e ON e.class_id = cl.class_id AND e.del_yn='N' WHERE co.use_yn='Y' AND co.del_yn='N' AND co.category_id = 10 AND co.course_type = 'free' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 54.39.89.208