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 ("Tattooed suspension bondage of slave Reversa in caning and tit torment Porn Videos Tattooed suspension bondage of slave Reversa in caning and tit pain in artistic ropes during harsh domination session and suspended spanking of amateur BDSM sub tied up") AND id !=101536 AND date < "2021-06-21 18:42:11" order by RAND() DESC limit 0,24