404. That’s an error.

The requested URL /users/oauth/?server=facebook&nv_redirect=Z-VEWwwuPQxuvtSTxdFUGbheHmCmAloYEgGD5zNd8Ti24KMd51P7NxSdbnDZb58s0UR_mQmTV4Z6Ihg8FH8grg%2C%2C was not found on this server. That’s all we know.