404. That’s an error.

The requested URL /users/oauth/?server=facebook&nv_redirect=4qa41HztA8wP5as2QP_HIwlF0re3kGDzLQvAcGro1nlYJ6HjWgGit5FuX4nzdhNlazg-jUuz-IcJkufwHERSpmNBC1b-3ANOR7BmjvZ4riA%2C was not found on this server. That’s all we know.