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 "[[:<:]](2648)[[:>:]]") AND approve = 1 AND date < "2023-12-01 01:18:10" AND id != 2668 AND id > 2668 ORDER BY id ASC LIMIT 0, 1