404. That’s an error.

The requested URL /users/oauth/?server=facebook&nv_redirect=rW_Qweo6Jlz8DjEXgoSD5jNW9S2vhPap2c1kfkpFzqUAz5QBLWPjy9N93RxO-VDp6uNQLjdyRIXQqdt6JbydsA%2C%2C was not found on this server. That’s all we know.