MySQL error in file: /engine/modules/blockpro/block.pro.3.php at line 550

Error Number: 126

The Error returned was:
Incorrect key file for table '/tmp/#sql_7894_0.MYI'; try to repair it

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 "[[:<:]](50)[[:>:]]" AND date >= "2018-04-21 03:22:49" - INTERVAL 21 DAY AND date < "2018-04-21 03:22:49" order by news_read DESC limit 0,7