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 ("Insane Twerk Cam Show Porn Videos Dont miss out this hot solo amateur video featuring this bootylicious babe! Come and check out her amazing solo amateur video as she flaunts her big spanking ass and twerk it like crazy! She will make you so hard as you hear her moan!") AND id !=102651 AND date < "2021-06-21 04:35:49" order by RAND() DESC limit 0,24