404. That’s an error.

The requested URL /users/oauth/?server=facebook&nv_redirect=IWSXtkIhzR21rNQkwhmkiYxiH9U32JMuzfX2HL3-BaKbGPYw3t61OPH80DqXPU7N6EI7MdtpxoIhyVEmS9_JuQ%2C%2C was not found on this server. That’s all we know.