404. That’s an error.

The requested URL /index.php/users/oauth/?server=facebook&nv_redirect=ID_kLRnAZEVl3j5BC-ry7a0mO2TIHDtYbJ4dQadegriP4UjGnQIARrtABdlpIcUWvT0h6R4ClYbShYKepQoRsxLXAOdksszSf8YV54FIIus%2C was not found on this server. That’s all we know.