Anyone else got WOW51900328 error and can't log back in?

I am having the same issue on Proudmoore

There’s a few different threads that we have on-going at the moment that may be causing this issues. We’d like to keep these threads centralized to the issue, so we can better track each issue separately.

For anyone else experiencing issues still on other servers like the US realms, please create a new thread, so that we can look into this individually with you!