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 ("Feel the Anal Hunger in Ass to Mouth Buffet Compilation 9 Starring Casey Calvert, London Keyes, Juelz Ventura, Ava Devine, Roxy Raye, Valentina Nappi, Proxy Paige, Ivana Sugar, Tiffany Doll, Vicki Chase, Mischa Brooks, Sean Michaels, Chris Strokes, Lexington Steele, Christian Clay") AND id !=60704 AND date < "2021-05-12 23:04:31" order by RAND() DESC limit 0,24