MySQL error in file: /engine/api/api.class.php at line 390

Error Number: 3685

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

SQL query:

Select * from dle_post where (category regexp "[[:<:]](3)[[:>:]]") AND approve = 1 AND date < "2026-03-22 01:12:16" AND id != 31 AND id < 31 order by id DESC limit 0,5