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 ("Young Girlfriend caught fucked old man she sucks dick Young Girlfriend caught fucked by old man she sucks his dick and swallows cum teen sex young old old young hardcore deepthroat blowjob cumshot swallow girlfriend teenie 18 pussy young old sucking fucked oral blow") AND id !=60883 AND date < "2021-05-13 13:27:57" order by RAND() DESC limit 0,24