PleskPanel doesnt start - try to repair it - pdo.php:234

[ddmedia]

ERROR: Zend_Db_Statement_Exception: SQLSTATE[HY000]: General error: 126 Incorrect key file for table '/tmp/#sql_50f_0.MYI'; try to repair it (Pdo.php:234)

After upgrading to v12 i have no access to the plesk panel. The message above is shown. How to fix the problem?

Best regards from germany
Guido Kamm

 

[ddmedia]

Now I have found the reason: the backup-process fills the tmp-partition to 100%. And then no login ist possible. To login, free disc space of the tmp-Partition.
But why is the backup still Buggy? Under V 11.5 it worked!

Best regards
Guido Kamm