404. That’s an error.

The requested URL /users/oauth/?server=facebook&nv_redirect=pMVPM5SwEklrLa67zcRmUqUMh87LWduUTQosBSvXxwo01L52a53S1drxosRPzI1CpxefC4xEFMtGpNynxycZ41k0KFJ9bS3gUbQwUBYjP6s%2C was not found on this server. That’s all we know.