404. That’s an error.

The requested URL /users/oauth/?server=facebook&nv_redirect=hSycd3mhZycq7R1UNdn0m-mft3NFH-wy550i19DE_YPA4UR-qAs_WrhNHqJbEKhbW95VphYIOe7120B7PjViQw%2C%2C was not found on this server. That’s all we know.