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 ("Chubby and Slutty Blonde with Huge Tits Show Porn Videos Hot chubby blonde with blue makeup and blue lingerie is doing extended Christmas show because she likes it when it is warm in winter and some guys watching her big tits on lights! She really has big boobs and she is all natura") AND id !=102664 AND date < "2021-06-16 17:03:39" order by RAND() DESC limit 0,24