MySQL error in file: /engine/cache/system/plugins/f8d5e2ccc0ddd34140eaf3a2a5fc0069.php at line 457

Error Number: 23

The Error returned was:
Out of resources when opening file './sitestrorg_db/dle_post.MYD' (Errcode: 24)

SQL query:

SELECT category, COUNT(*) AS count FROM dle_post WHERE approve=1 AND serie_id='0' GROUP BY category