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 ("Stepsisters Zoey Foxx and Gia Derza fingerfucking pussies Porn Videos Check in here two lovely stepsisters Zoey Foxx and Gia Derza hang out in the living room when they decide to practice massaging each other After sometime, they begin to kiss ones warm lips until they flip one another with their pussies ready for some licking and fingering") AND id !=101387 AND date < "2021-06-13 01:44:26" order by RAND() DESC limit 0,24