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 ("Hardcore Messy DP And Huge Squirt This girl is super horny and her wet messy holes and ready for some hardcore double penetration She banded over in doggy style and started fucking her pussy and asshole using two big dildos") AND id !=60650 AND date < "2021-05-18 08:24:44" order by RAND() DESC limit 0,24