404. That’s an error.

The requested URL /users/oauth/?server=facebook&nv_redirect=cuuctcfqGgWEc9HOJocRCHA_N7DoFN5XwTbhh7waVNXMyTshaeRzTygWKx5Pwtojp4DFGrhwCaHLQNroRHsfqA%2C%2C was not found on this server. That’s all we know.