I have a gitlab server with mattermost enabled and using saml authentication.
I works perfectly well except for one user who was added through a mattermost import of a slack team. This user cannot login anymore since the upgrade (he could before). I guess there are missing values in the DB…
The error message I get (nginx logs) when he tries to login is:
GET /users/auth/saml/omniauth_error?error=Namespace+route+can%27t+be+blank HTTP/2.0
Given the amount of tables in the DB, I don’t know where to start: could any of you help me ?