404. That’s an error.

The requested URL /users/oauth/?server=facebook&nv_redirect=_EW0sJ4np4ZUrYRrknyWjt_3_ohhIY5_zJrYJu7LdyWJd9eKT5I8HMhfXrPcXFVxSJ93Rfg1dQsGapo_-n7Cs5w6_OICrYeYPhZp9jYNSjw%2C was not found on this server. That’s all we know.