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 "[[:<:]](12)[[:>:]]") AND approve = 1 AND date < "2023-04-01 13:18:48" AND id != 241 AND id < 241 ORDER BY id DESC LIMIT 0, 3