404. That’s an error.

The requested URL /users/oauth/?server=facebook&nv_redirect=_mYO7OtrlvGiLvJZRGRXRg9cD_MAwlv3epnx0vse0NG54hikpAM163Da0XGmqDUu1cFqo9mG8w620SqOzi_f6Y0ag66r8zNP3u4IG4Bcl7Y%2C was not found on this server. That’s all we know.