MySQL error in file: /engine/init.php at line 304

Error Number: 1

The Error returned was:
Can't create/write to file '/home/mysqltmp/MYKHVjNO' (Errcode: 28 "No space left on device")

SQL query:

SELECT category, COUNT(*) AS count FROM dle_post WHERE approve=1 AND date < '2025-12-11 04:00:13' GROUP BY category