MySQL error in file: /engine/cache/system/plugins/ed290853bb6ae2a60f739eacdfc20600.php at line 2001

Error Number: 1021

The Error returned was:
Disk full (/tmp/#sql-temptable-30e-1ee529-90fd.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")

SQL query:

SELECT p.id, p.autor, p.date, p.short_story, CHAR_LENGTH(p.full_story) as full_story, p.xfields, p.title, p.category, p.alt_name, p.comm_num, p.allow_comm, p.fixed, p.tags, e.news_read, e.allow_rate, e.rating, e.vote_num, e.votes, e.view_edit, e.editdate, e.editor, e.reason FROM dle_post p INNER JOIN (SELECT DISTINCT(dle_post_extras_cats.news_id) FROM dle_post_extras_cats WHERE cat_id IN ('2','3','4','5','6','7','8','9','10','11','12','13','14','15','16','17','18','19','20')) c ON (p.id=c.news_id) LEFT JOIN dle_post_extras e ON (p.id=e.news_id) WHERE approve=1 ORDER BY news_read DESC LIMIT 0,5