404. That’s an error.

The requested URL /users/oauth/?server=facebook&nv_redirect=KJ12Q3OZbKUm0a4cMm5O6Zi_IWkeOmMrEmGc_QHXu25Sjvh8IhJRqvOwgtlBdKh4kGL9jesX1C0uipoG8sEmGGfItgKm0UCopSZ8rTc7QOQ%2C was not found on this server. That’s all we know.