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.MAD' (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 ("Amateur Blonde Babe gets a Hard Pussy Banging Porn Videos Hot pussy fucking of this horny and naughty couple while streaming live This amateur pretty blonde girl is very good in bed she started the hot moment with blowjob She suck her boyfriend hard long cock and until it become hard You can see on his face that he really likes what his girlfriends doing with him in return he started fucking her pussy in doggie position This naughty babe ride on his cock like a cowgirl while still rubbing her clit") AND id !=101459 AND date < "2021-06-21 19:44:10" order by RAND() DESC limit 0,24