While creating a database user in Plesk, getting the error:
Error: There are no database servers available for this subscription
/var/log/plesk/panel.log log contains the following:
PHP Notice: Undefined offset: 0
Internal product issue #PPPM-2325 .
The issue has been fixed in Parallels Plesk 12.0.18 MU#28Install all MUs on your Plesk server.