404. That’s an error.

The requested URL /users/oauth/?server=facebook&nv_redirect=cfQtvFd6Cuh9LRmRmTjvvCxPowxFhT-H4aHA9P01DreUBcEMnzgghf5q5IsVxfRZDFWnE5Hbr8S1Yilv31fEHA%2C%2C was not found on this server. That’s all we know.