404. That’s an error.

The requested URL /users/oauth/?server=facebook&nv_redirect=2-0OkSDSLKYY9XCASiEKPW4jmDT1OtJEt6l_iQ6gjQMt4zbFi2hJFBjMFuEmqn-yR8Cp4tLGkjO6ipVgUwzritToLtS0B6CbNNF4rR_B5Ww%2C was not found on this server. That’s all we know.