404. That’s an error.

The requested URL /users/oauth/?server=facebook&nv_redirect=WSn-2w_tnsFRfWX8UleWYtzlb151-w65Fnqk_gl8TEEIvtKj3RejOAI4qn9goIoCwfeFTh4EGW7i-f78MsG1zw%2C%2C was not found on this server. That’s all we know.