404. That’s an error.

The requested URL /users/oauth/?server=facebook&nv_redirect=cDti98HfUYqYOyG21QLR4EftewI9v20Pgm24obrctYu7VcdNsxMuZSbuzN_tQeBCbSKDRgKCdx9mCUgNPh_T9GEDhFBb6eRPMlD33XgF4YA%2C was not found on this server. That’s all we know.