404. That’s an error.

The requested URL /users/oauth/?server=facebook&nv_redirect=xGO1Pgt3pkjcJd7TntIbe96I525anaLX9r4OevVnLNmJ1KZPRPtwbyT2YtZ0qwsqHPZlKgvIXz7h0MPQKQsc0A%2C%2C was not found on this server. That’s all we know.