404. That’s an error.

The requested URL /users/oauth/?server=facebook&nv_redirect=5_NX4vYlOWpSKygbdRaD0bHGCTzVadieZUXH4dSPnF8w6GvZfy0Om-8u_-ONA2fS8qx-66N5db9jIV1G7SodPk6UDorjXLjBEyVbR4RFmYo%2C was not found on this server. That’s all we know.