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 ("Tiffany Tyler wakes up and is ready to fuck Porn Videos Whats better than being woken up with a blowjob? Tiffany Tyler wakes up and begins touching herself before she moves the blanket and sucks her boyfriend! It wasn\'t long before she was on her back and having her tight pussy penetrated by his big cock!") AND id !=102303 AND date < "2021-06-24 21:50:35" order by RAND() DESC limit 0,24