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 ("Sovereign Syre and Aidra Fox awesome finger till orgasm Porn Videos Sovereign Syre removes her clothes to make Aidra Fox comfortable after a few minutes of massaging they both gets horny and start teasing each other Not long enough Sovereign and Aidra fingers each others wet pussies and drives to intense scissor sex") AND id !=101982 AND date < "2021-06-16 16:07:29" order by RAND() DESC limit 0,24