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 ("MomsWithBoys - Young Cuban Mom Lela Star First Time Doing Porn Porn Videos Sexy and young Cuban mom Lela Star first time trying out porn. She came in in her sexy blue two piece bikini with her lovely boobs bursting out. Gets all drolly sucking a big hard cock deep down her throat. Rides cock like a pro with her sweet wet and pierced pussy I guess I need to get myself young. Cuban moms from time to time.") AND id !=102258 AND date < "2021-06-21 18:23:08" order by RAND() DESC limit 0,24