404. That’s an error.

The requested URL /users/oauth/?server=facebook&nv_redirect=M3CAmZJGamRAmHJwlgwlnF9gDwiG9cnuolDT1XywFbOQKlRX36dEmYo1GPs45VXzjNTO2IgChihNnR86-0FwC4_BmmX9i9y81aFYHByTsoY%2C was not found on this server. That’s all we know.