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 ero_post where (category regexp "[[:<:]](28)[[:>:]]" OR category regexp "[[:<:]](31)[[:>:]]") AND approve = 1 AND date < "2025-07-08 19:40:59" AND id != 2917 AND id > 2917 order by id ASC limit 0,3