MySQL Error!
MySQL error in file: /engine/modules/show.full.php at line 944
Error Number: 1139
The Error returned was:
Got error 'empty (sub)expression' from regexp
SQL query:

SELECT id, date, short_story, xfields, title, category, alt_name FROM dle_post WHERE category regexp '[[:<:]](15|)[[:>:]]' AND MATCH (title, short_story, full_story, xfields) AGAINST ('Беар Гриллс: По стопам выживших / Bear Grylls: Escape From Hell ') AND id != 29234 AND approve=1 AND date < '2018-05-21 05:57:18' LIMIT 10