404. That’s an error.

The requested URL /users/oauth/?server=facebook&nv_redirect=N3AE-yZy4akt6D1osohgmJ52O7_A4IOTvWuPZ4vHxJxzuiePNQIeP4jP5YLXVMu7PqDOriqCBNm6q5vczGQk4feCAQL78boH_TVj67-6gbjkhWIGs16tmh8xXrwOulw0NeIZCM5zzOiJp1c1MrG6WA%2C%2C was not found on this server. That’s all we know.