MySQL error in file: /engine/modules/show.short.php at line 64

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, CHAR_LENGTH(p.full_story) as full_story, p.xfields, p.title, p.category, p.alt_name, p.comm_num, p.allow_comm, p.fixed, p.tags, e.news_read, e.allow_rate, e.rating, e.vote_num, e.votes, e.view_edit, e.editdate, e.editor, e.reason FROM dle_post p LEFT JOIN dle_post_extras e ON (p.id=e.news_id) WHERE category regexp '[[:<:]](193|1|72|73|74|75|76|77|78|79|80|81|82|83|84|85|86|12|63|64|65|66|67|68|69|70|107|180|189|190|13|35|36|37|38|39|40|41|42|43|44|45|46|47|48|49|50|51|52|53|54|55|56|57|58|59|60|61|62|71|187|201|14|15|16|17|18|19|20|21|22|23|188)[[:>:]]' AND approve=1 AND date < '2024-12-01 00:06:29' ORDER BY fixed desc, date DESC LIMIT 0,5