Plesk Database Error Resolution on Linux

I'm in need of a professional who can help me resolve a critical Plesk\Exception\Database error that's currently preventing me from logging into my Plesk account. Here are some details to help you understand the situation:

I made changes to mysql root password and after that i am not able to login to my plesk server.
I need someone with plesk experience to resolve the issue for me.

Also see the screenshot attached