[2026-04-02 00:09:06] [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 = 7 | IP: 47.128.52.91
[2026-04-02 00:09:06] [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 = 7 GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.91
[2026-04-02 02:34:51] [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' | IP: 47.128.52.43
[2026-04-02 02:34:51] [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' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 47.128.52.43
[2026-04-02 02:38:57] [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 = 8 | IP: 47.128.53.108
[2026-04-02 02:38:57] [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 = 8 GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 47.128.53.108
[2026-04-02 03:11:26] [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' | IP: 47.128.52.80
[2026-04-02 03:11:26] [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' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 47.128.52.80
[2026-04-02 05:00:59] [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.course_type = 'corporate' | IP: 47.128.52.74
[2026-04-02 05:00:59] [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.course_type = 'corporate' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.74
[2026-04-02 05:04:52] [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 = 6 | IP: 47.128.52.62
[2026-04-02 05:04:52] [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 = 6 GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.62
[2026-04-02 06:54:36] [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 | IP: 47.128.52.99
[2026-04-02 06:54:36] [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 GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.99
[2026-04-02 07:11:48] [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' | IP: 47.128.52.92
[2026-04-02 07:11:48] [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' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.92
[2026-04-02 07:27:44] [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 | IP: 47.128.52.89
[2026-04-02 07:27:44] [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 GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.89
[2026-04-02 09:39:48] [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.course_type = 'corporate' | IP: 47.128.52.79
[2026-04-02 09:39:48] [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.course_type = 'corporate' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.79
[2026-04-02 10:15:53] [DB_QUERY_ERROR] MSG: Unknown column 'use_yn' in 'where clause' | SQL: SELECT COUNT(*) AS c FROM lms_course WHERE use_yn='Y' AND del_yn='N' | IP: 47.128.52.72
[2026-04-02 10:15:53] [DB_QUERY_ERROR] MSG: Unknown column 'del_yn' in 'where clause' | SQL: SELECT COUNT(*) AS c FROM lms_member WHERE del_yn='N' | IP: 47.128.52.72
[2026-04-02 10:15:53] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, co.pass_min_progress, ca.category_name, COUNT(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' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 8  | IP: 47.128.52.72
[2026-04-02 10:15:53] [DB_QUERY_ERROR] MSG: Unknown column 'co.course_type' in 'field list' | SQL:  SELECT co.course_id, co.course_title, co.thumb_image, co.course_type, co.price_sale, co.total_time, co.content_count, ca.category_name 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' ORDER BY co.created_at DESC LIMIT 4  | IP: 47.128.52.72
[2026-04-02 10:15:53] [DB_QUERY_ERROR] MSG: Unknown column 'co.use_yn' in 'on clause' | SQL:  SELECT ca.category_id, ca.category_name, COUNT(co.course_id) AS course_cnt FROM lms_category ca LEFT JOIN lms_course co ON co.category_id = ca.category_id AND co.use_yn='Y' AND co.del_yn='N' WHERE ca.use_yn='Y' GROUP BY ca.category_id ORDER BY ca.sort_order ASC LIMIT 8  | IP: 47.128.52.72
[2026-04-02 11:41:13] [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.course_type = 'free' | IP: 47.128.52.36
[2026-04-02 11:41:13] [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.course_type = 'free' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.36
[2026-04-02 12:20:27] [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 | IP: 47.128.52.51
[2026-04-02 12:20:27] [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 GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.51
[2026-04-02 12:53:22] [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' | IP: 66.132.186.172
[2026-04-02 12:53:22] [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' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 66.132.186.172
[2026-04-02 13:16:34] [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 = 10 | IP: 47.128.52.43
[2026-04-02 13:16:34] [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 = 10 GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.43
[2026-04-02 15:23:49] [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.course_type = 'corporate' | IP: 148.113.130.43
[2026-04-02 15:23:50] [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.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.course_title ASC LIMIT 0, 12 | IP: 148.113.130.43
[2026-04-02 15:57:44] [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' | IP: 47.128.52.88
[2026-04-02 15:57:44] [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' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.88
[2026-04-02 16:08:57] [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' | IP: 47.128.52.80
[2026-04-02 16:08:57] [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' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.80
[2026-04-02 16:22:38] [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 = 9 | IP: 47.128.52.87
[2026-04-02 16:22:38] [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 = 9 GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.87
[2026-04-02 16:37:46] [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.course_type = 'corporate' | IP: 142.44.220.179
[2026-04-02 16:37:46] [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.course_type = 'corporate' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 142.44.220.179
[2026-04-02 18:09:55] [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 = 9 | IP: 47.128.52.69
[2026-04-02 18:09:55] [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 = 9 GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.69
[2026-04-02 18:24:44] [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 = 'corporate' | IP: 47.128.52.32
[2026-04-02 18:24:44] [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 = 'corporate' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.32
[2026-04-02 18:28:45] [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: 47.128.52.61
[2026-04-02 18:28:45] [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 enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.61
[2026-04-02 18:32:46] [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.course_type = 'free' | IP: 47.128.53.104
[2026-04-02 18:32:46] [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.course_type = 'free' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 47.128.53.104
[2026-04-02 19:14:33] [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.course_type = 'corporate' | IP: 54.39.210.103
[2026-04-02 19:14:33] [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.course_type = 'corporate' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 54.39.210.103
[2026-04-02 19:23:07] [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.course_type = 'corporate' | IP: 47.128.53.104
[2026-04-02 19:23:07] [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.course_type = 'corporate' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 47.128.53.104
[2026-04-02 19:30:19] [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 | IP: 47.128.52.69
[2026-04-02 19:30:19] [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 GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.69
[2026-04-02 19:38:22] [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 = 4 | IP: 47.128.52.46
[2026-04-02 19:38:22] [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 = 4 GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.46
[2026-04-02 20:07:14] [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' | IP: 35.187.13.22
[2026-04-02 20:07:14] [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' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 35.187.13.22
[2026-04-02 20:08:19] [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 = 1 | IP: 47.128.52.58
[2026-04-02 20:08:19] [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 = 1 GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.58
[2026-04-02 23:50:56] [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 = 6 | IP: 47.128.52.52
[2026-04-02 23:50:56] [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 = 6 GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.52
[2026-04-02 23:55:40] [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 = 7 | IP: 47.128.52.83
[2026-04-02 23:55:40] [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 = 7 GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.83