500 internal error after changing phpmyadmin aliias

[Cp-user]

I followed this to hide my domain/phpmyadmin

Remove (or hide) PHPmyAdmin

Hello. I’m having an increasingly number of visits to mydomain.com/phpmyadmin what seems quite suspicious specially when I don’t use it and didn’t even know it existed in my Hestia installation. Is there a way to ‘turn it off’, uninstall it or reinforce security for that issue? T.I.A.

After changing its works but database keeps disconnecting for 2 hours interval says 500 error , server misconfiguration .