404. That’s an error.

The requested URL /users/oauth/?server=facebook&nv_redirect=eJrNDXW8AhLhnDxJS_H7qkKWgyrgeBiHSc8BTS4GafH-_CCRmAUnudS08QIZEN3OoQ5M_K3iYGxBDEi9kl5h2t3xQGOhfHDY5Qx-Rimwz6tV0GEMatmgH0n4KHe2fgGC was not found on this server. That’s all we know.