Redirecting to https://www.facebook.com/v3.3/dialog/oauth?client_id=&redirect_uri=https%3A%2F%2Fyourhost.com%2Fcustomer%2Fsocial-login%2Ffacebook%2Fcallback&scope=email&response_type=code&state=frecbUir7PAicqpvKgCj5kfzoHQpALBJvBluHEUe.