404. That’s an error.

The requested URL /users/oauth/?server=facebook&nv_redirect=9aoENdhfPYiq8eIXAKdfaHueYIYTJXd92T2k-o_NGwR9lnPkhbTAie5laq3czQN229vFcEs5WmqbvUaL325HEPxhD0zgG3j4UD9SKHM1eVrKJWnGvt-Ox_h2OF2iPbiG was not found on this server. That’s all we know.