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 ("April ONeil and Jade Bakers mouths collide in a passionate kiss Porn Videos April and Jade are sitting on the living room couch together watching TV They lock eyes They try to look away from each other,but their proximity is causing the sexual tension of the last few days to become unbearable They bite their lips and kiss") AND id !=102412 AND date < "2021-06-21 03:44:26" order by RAND() DESC limit 0,24