MySQL error in file: /engine/modules/block.pro.php at line 149

Error Number: 3685

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

SQL query:

SELECT p.id, p.autor, p.date, p.short_story, p.xfields, p.title, p.category, p.alt_name, p.allow_comm, p.comm_num, e.news_read, e.allow_rate, e.rating, e.vote_num, e.votes FROM dle_post p LEFT JOIN dle_post_extras e ON (p.id=e.news_id) WHERE p.approve=1 AND p.category regexp '[[:<:]](9)[[:>:]]' AND p.date < '2022-05-17 14:57:09' ORDER BY rating DESC, comm_num DESC, news_read DESC LIMIT 0,3