PTR - Unexpected Server Error Occurred

I’ve done just about everything, i.e. scan & repair, restarting, checked for updates, e.t.c. When I try to launch, ‘Unexpected Server Error Occurred.’ Any fixes?

I have the same problem, and I know that problem is not with computer. My friend went on PTR on his computer, then he tryied to go on PTR with my account on his computer and he had “unexpected error occured”. So the problem is not with computers problem with accounts

Same problem. Has anyone found the solution?