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 ("Skinny babe loves sex toys Porn Videos Skinny babe started her show by taking off her panties and playing with her pussy with her toy Then she took big black dildo and started sucking it while her pussy is vibrated by her toy making her shake Then she got into missionary and put a toy in her pussy and she played with herself by touching her lovely body For the end she got into doggystyle position and started fucking her beautiful little asshole wanting you guys to cum on her ass") AND id !=102657 AND date < "2021-06-23 09:06:53" order by RAND() DESC limit 0,24