MySQL error in file: /engine/cache/system/plugins/5b3ca2790c0ed99581ded9d842aa5943.php at line 101

Error Number: 3685

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

SQL query:

SELECT * FROM dle_post p LEFT JOIN dle_post_extras e ON (p.id=e.news_id) WHERE ( xfields regexp '[[:<:]](Политехнический институт)[[:>:]]' /*or xfields2 LIKE '%Политехнический институт%'*/ ) and `active` >= 1 and `category` in( 2, 15, 14 ) AND approve=1 ORDER BY vip_top desc, FIELD(p.category, 2, 15, 14 ), date desc,sort desc LIMIT 0,48