How to resolve this error
Please post a case with Blackboard support at behind.blackboard.com and give them the error id. This can be located in log files for more info. They should be able to help.
If you are getting this error for everyone Szymon is correct placing a ticket with BBSupport would be the correct way to go.
That being said this error is often caused when someone logs in via your single sign on solution who exists in that solution but has not yet been created in Blackboard. I would double check that the person who is trying to sign in exists within Blackboard first.
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