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 ("A skinny redhead is eager to be fucked! She passed by, and Mark followed her with his camera, knowing she is gonna be the one giving great head, he felt it internally, she wants to be fucked. Her little tits, her ass, young naive eyes made him believe she is horny and can easily get talked into a hot wild sex. Now watch her indifference in casting interviews, she wants to suck his cock so badly, he barely manages to pull it out from his pants. Suck it babe, ride it hard! Awesome!") AND id !=16877 AND date < "2021-04-13 19:27:30" order by RAND() DESC limit 0,24