MySQL error in file: /engine/cache/system/plugins/b6f8d0f3feed17a571e1bde31f814638.php at line 2183

Error Number: 23

The Error returned was:
Out of resources when opening file '/var/tmp/#sql_20ae_251.MAD' (Errcode: 24)

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.descr, p.keywords, p.category, p.alt_name, p.comm_num, p.allow_comm, p.allow_main, p.approve, p.fixed, p.symbol, p.tags, e.news_read, e.allow_rate, e.rating, e.vote_num, e.votes, e.view_edit, e.disable_index, 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','18','19','20','21','22','23','24','25','26','28','29','30','34','35','37','38','39','40','43','44','45','46','47','48','49','50','51','52','53','54','55','56','57','58','59','62','63','64','66','67')) c ON (p.id=c.news_id) LEFT JOIN dle_post_extras e ON (p.id=e.news_id) WHERE approve=1 AND p.serie_id=0 ORDER BY RAND() LIMIT 0,6