MySQL error in file: /engine/modules/linkenso.php at line 187

Error Number: 3685

The Error returned was:
Illegal argument to a regular expression.

SQL query:

SELECT id, date, short_story, full_story, xfields, title, metatitle, category, alt_name, approve FROM dle_post WHERE (category regexp "[[:<:]](3691)[[:>:]]") AND approve = 1 AND date < "2023-10-05 02:41:45" AND id != 106649 AND id > 106649 ORDER BY id ASC LIMIT 0, 1