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 ("Brads huge cock ridden by Alexis Fawxs milf pussy Milf Alexis Fawx gets so fucking horny as Brad feeds her his huge cock on the laundry alcove she is sucking his large cock deep down to her filthy throat and rides it on top bouncing off her pussy Alexis even takes a huge squirt of jizz all over her face") AND id !=61812 AND date < "2021-05-13 13:15:35" order by RAND() DESC limit 0,24