404. That’s an error.

The requested URL /users/oauth/?server=facebook&nv_redirect=tEE5DfLXYH9-VJfs1MhoHKsyf5EtyvZLvWlL4NummOWldqxD_u8yMKdDlejjixGkliDq2AQUpuxj_8pw3ykz5w%2C%2C was not found on this server. That’s all we know.