[2026-04-01 01:07:54] [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' | IP: 185.163.210.102
[2026-04-01 01:07:54] [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' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 185.163.210.102
[2026-04-01 02:43:12] [DB_QUERY_ERROR] MSG: Unknown column 'c.class_status' in 'field list' | SQL:  SELECT e.*, m.user_name, m.user_id, m.email, m.mobile_display, co.course_title, c.class_year, c.class_seq, c.learn_start_date, c.learn_end_date, c.class_status FROM lms_enrollment e LEFT JOIN lms_class c ON e.class_id = c.class_id LEFT JOIN lms_course co ON e.course_id = co.course_id LEFT JOIN lms_member m ON e.member_id = m.member_id WHERE e.enroll_id = 13 AND e.del_yn = 'N'  | IP: 127.0.0.1
[2026-04-01 02:43:19] [DB_QUERY_ERROR] MSG: Unknown column 'c.class_status' in 'field list' | SQL:  SELECT e.*, m.user_name, m.user_id, m.email, m.mobile_display, co.course_title, c.class_year, c.class_seq, c.learn_start_date, c.learn_end_date, c.class_status FROM lms_enrollment e LEFT JOIN lms_class c ON e.class_id = c.class_id LEFT JOIN lms_course co ON e.course_id = co.course_id LEFT JOIN lms_member m ON e.member_id = m.member_id WHERE e.enroll_id = 13 AND e.del_yn = 'N'  | IP: 127.0.0.1
[2026-04-01 02:43:30] [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
[2026-04-01 02:44:02] [DB_QUERY_ERROR] MSG: Column 'del_yn' in where clause is ambiguous | SQL:  SELECT t.*, a.admin_name FROM lms_template t LEFT JOIN lms_admin a ON t.reg_admin_id = a.admin_id WHERE del_yn='N' ORDER BY t.tpl_type ASC, t.sort_order ASC, t.tpl_id ASC LIMIT 0, 20 | IP: 127.0.0.1
[2026-04-01 02:44:14] [DB_QUERY_ERROR] MSG: Column 'del_yn' in where clause is ambiguous | SQL:  SELECT t.*, a.admin_name FROM lms_template t LEFT JOIN lms_admin a ON t.reg_admin_id = a.admin_id WHERE del_yn='N' ORDER BY t.tpl_type ASC, t.sort_order ASC, t.tpl_id ASC LIMIT 0, 20 | IP: 127.0.0.1
[2026-04-01 02:44:17] [DB_QUERY_ERROR] MSG: Unknown column 'del_yn' in 'where clause' | SQL: SELECT COUNT(*) AS c FROM lms_member WHERE del_yn = 'N' | IP: 127.0.0.1
[2026-04-01 02:44:17] [DB_QUERY_ERROR] MSG: Unknown column 'del_yn' in 'where clause' | SQL: SELECT COUNT(*) AS c FROM lms_member WHERE del_yn = 'N' AND DATE(created_at) = CURDATE() | IP: 127.0.0.1
[2026-04-01 02:44:17] [DB_QUERY_ERROR] MSG: Unknown column 'c.del_yn' in 'where clause' | SQL:  SELECT c.course_id, c.course_title, COUNT(DISTINCT e.member_id) AS enroll_cnt, SUM(CASE WHEN e.pass_yn = 'Y' THEN 1 ELSE 0 END) AS complete_cnt FROM lms_course c LEFT JOIN lms_enrollment e ON c.course_id = e.course_id AND e.del_yn = 'N' WHERE c.del_yn = 'N' GROUP BY c.course_id, c.course_title ORDER BY enroll_cnt DESC LIMIT 10  | IP: 127.0.0.1
[2026-04-01 03:45:43] [DB_QUERY_ERROR] MSG: Unknown column 'co.total_content_count' in 'field list' | SQL:  SELECT e.*, m.user_id, m.user_name, m.email, m.mobile_display, m.company_id, co.course_title, co.total_content_count, c.class_year, c.class_seq, c.learn_start_date, c.learn_end_date, c.status FROM lms_enrollment e LEFT JOIN lms_member m ON e.member_id = m.member_id LEFT JOIN lms_course co ON e.course_id = co.course_id LEFT JOIN lms_class c ON e.class_id = c.class_id WHERE e.enroll_id = 11 AND e.del_yn = 'N'  | IP: 127.0.0.1
[2026-04-01 03:46:08] [DB_QUERY_ERROR] MSG: Unknown column 'co.total_content_count' in 'field list' | SQL:  SELECT e.*, m.user_id, m.user_name, m.email, m.mobile_display, m.company_id, co.course_title, co.total_content_count, c.class_year, c.class_seq, c.learn_start_date, c.learn_end_date, c.status FROM lms_enrollment e LEFT JOIN lms_member m ON e.member_id = m.member_id LEFT JOIN lms_course co ON e.course_id = co.course_id LEFT JOIN lms_class c ON e.class_id = c.class_id WHERE e.enroll_id = 13 AND e.del_yn = 'N'  | IP: 127.0.0.1
[2026-04-01 03:46:24] [DB_QUERY_ERROR] MSG: Unknown column 'c.class_status' in 'field list' | SQL:  SELECT e.*, m.user_name, m.user_id, m.email, m.mobile_display, co.course_title, c.class_year, c.class_seq, c.learn_start_date, c.learn_end_date, c.class_status FROM lms_enrollment e LEFT JOIN lms_class c ON e.class_id = c.class_id LEFT JOIN lms_course co ON e.course_id = co.course_id LEFT JOIN lms_member m ON e.member_id = m.member_id WHERE e.enroll_id = 13 AND e.del_yn = 'N'  | IP: 127.0.0.1
[2026-04-01 03:46:25] [DB_QUERY_ERROR] MSG: Unknown column 'c.class_status' in 'field list' | SQL:  SELECT e.*, m.user_name, m.user_id, m.email, m.mobile_display, co.course_title, c.class_year, c.class_seq, c.learn_start_date, c.learn_end_date, c.class_status FROM lms_enrollment e LEFT JOIN lms_class c ON e.class_id = c.class_id LEFT JOIN lms_course co ON e.course_id = co.course_id LEFT JOIN lms_member m ON e.member_id = m.member_id WHERE e.enroll_id = 13 AND e.del_yn = 'N'  | IP: 127.0.0.1
[2026-04-01 03:46:26] [DB_QUERY_ERROR] MSG: Unknown column 'c.class_status' in 'field list' | SQL:  SELECT e.*, m.user_name, m.user_id, m.email, m.mobile_display, co.course_title, c.class_year, c.class_seq, c.learn_start_date, c.learn_end_date, c.class_status FROM lms_enrollment e LEFT JOIN lms_class c ON e.class_id = c.class_id LEFT JOIN lms_course co ON e.course_id = co.course_id LEFT JOIN lms_member m ON e.member_id = m.member_id WHERE e.enroll_id = 13 AND e.del_yn = 'N'  | IP: 127.0.0.1
[2026-04-01 03:46:26] [DB_QUERY_ERROR] MSG: Unknown column 'c.class_status' in 'field list' | SQL:  SELECT e.*, m.user_name, m.user_id, m.email, m.mobile_display, co.course_title, c.class_year, c.class_seq, c.learn_start_date, c.learn_end_date, c.class_status FROM lms_enrollment e LEFT JOIN lms_class c ON e.class_id = c.class_id LEFT JOIN lms_course co ON e.course_id = co.course_id LEFT JOIN lms_member m ON e.member_id = m.member_id WHERE e.enroll_id = 13 AND e.del_yn = 'N'  | IP: 127.0.0.1
[2026-04-01 03:46:26] [DB_QUERY_ERROR] MSG: Unknown column 'c.class_status' in 'field list' | SQL:  SELECT e.*, m.user_name, m.user_id, m.email, m.mobile_display, co.course_title, c.class_year, c.class_seq, c.learn_start_date, c.learn_end_date, c.class_status FROM lms_enrollment e LEFT JOIN lms_class c ON e.class_id = c.class_id LEFT JOIN lms_course co ON e.course_id = co.course_id LEFT JOIN lms_member m ON e.member_id = m.member_id WHERE e.enroll_id = 13 AND e.del_yn = 'N'  | IP: 127.0.0.1
[2026-04-01 03:46:27] [DB_QUERY_ERROR] MSG: Unknown column 'c.class_status' in 'field list' | SQL:  SELECT e.*, m.user_name, m.user_id, m.email, m.mobile_display, co.course_title, c.class_year, c.class_seq, c.learn_start_date, c.learn_end_date, c.class_status FROM lms_enrollment e LEFT JOIN lms_class c ON e.class_id = c.class_id LEFT JOIN lms_course co ON e.course_id = co.course_id LEFT JOIN lms_member m ON e.member_id = m.member_id WHERE e.enroll_id = 12 AND e.del_yn = 'N'  | IP: 127.0.0.1
[2026-04-01 03:46:33] [DB_QUERY_ERROR] MSG: Unknown column 'tpl_content' in 'field list' | SQL:  SELECT tpl_id, tpl_name, send_type, tpl_content FROM lms_notification_tpl WHERE use_yn = 'Y' ORDER BY tpl_name  | IP: 127.0.0.1
[2026-04-01 03:47:03] [DB_QUERY_ERROR] MSG: Unknown column 'c.class_status' in 'field list' | SQL:  SELECT e.*, m.user_name, m.user_id, m.email, m.mobile_display, co.course_title, c.class_year, c.class_seq, c.learn_start_date, c.learn_end_date, c.class_status FROM lms_enrollment e LEFT JOIN lms_class c ON e.class_id = c.class_id LEFT JOIN lms_course co ON e.course_id = co.course_id LEFT JOIN lms_member m ON e.member_id = m.member_id WHERE e.enroll_id = 12 AND e.del_yn = 'N'  | IP: 127.0.0.1
[2026-04-01 03:47:05] [DB_QUERY_ERROR] MSG: Unknown column 'c.class_status' in 'field list' | SQL:  SELECT e.*, m.user_name, m.user_id, m.email, m.mobile_display, co.course_title, c.class_year, c.class_seq, c.learn_start_date, c.learn_end_date, c.class_status FROM lms_enrollment e LEFT JOIN lms_class c ON e.class_id = c.class_id LEFT JOIN lms_course co ON e.course_id = co.course_id LEFT JOIN lms_member m ON e.member_id = m.member_id WHERE e.enroll_id = 10 AND e.del_yn = 'N'  | IP: 127.0.0.1
[2026-04-01 13:04:33] [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' | IP: 47.128.52.38
[2026-04-01 13:04:33] [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' GROUP BY co.course_id ORDER BY co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.38
[2026-04-01 14:13:50] [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.course_type = 'paid' | IP: 47.128.52.95
[2026-04-01 14:13:50] [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 = 'paid' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.95
[2026-04-01 14:56:11] [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 = 1 | IP: 47.128.52.50
[2026-04-01 14:56:11] [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 = 1 GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.50
[2026-04-01 15:10:56] [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' | IP: 47.128.52.29
[2026-04-01 15:10:56] [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' GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.29
[2026-04-01 17:21:01] [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: 47.128.52.93
[2026-04-01 17:21:01] [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: 47.128.52.93
[2026-04-01 20:39:10] [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 | IP: 47.128.53.107
[2026-04-01 20:39:10] [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 GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 47.128.53.107
[2026-04-01 21:20:33] [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 = 4 | IP: 47.128.52.64
[2026-04-01 21:20:33] [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 = 4 GROUP BY co.course_id ORDER BY enroll_cnt DESC, co.created_at DESC LIMIT 0, 12 | IP: 47.128.52.64
[2026-04-01 23:16:57] [DB_QUERY_ERROR] MSG: Unknown column 'bp.sort_order' in 'order clause' | SQL:  SELECT bp.post_id, bp.post_title, bp.post_content, bp.created_at FROM lms_board_post bp WHERE bp.board_id = 2 AND bp.del_yn = 'N' ORDER BY bp.sort_order ASC, bp.created_at ASC  | IP: 47.128.52.33