MySQL error in file: /engine/modules/blockpro/block.pro.3.php at line 552

Error Number: 1

The Error returned was:
Can't create/write to file '/var/tmp/#sql_3929_0.MAI' (Errcode: 28)

SQL query:

SELECT p.id, p.autor, p.date, p.short_story, p.full_story, p.xfields, p.title, p.category, p.alt_name, p.allow_comm, p.comm_num, p.fixed, p.tags, 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 approve AND NOT category regexp "[[:<:]](40|41)[[:>:]]" AND MATCH (title, short_story, full_story, xfields) AGAINST ("Cocky wife Violette Pink almost gets caught with masseur Cocky young blonde wife, Violette loves playing with fire she enjoys if she almost gets caught in cheating by her husband So Violette isnt shy to fuck her masseur while her husband arrives home soon She wants that big cock in her mouth and pussy like a horny little slut") AND id !=60394 AND date < "2021-05-13 00:14:18" order by RAND() DESC limit 0,24