Can't able to fetch friends email id

[himanigeek]

openFB.api(token, {
path: '/me/friends',
params: { "fields": "name,email,picture.width(70).height(70)" },
success: function (res) {
$scope.$apply(function () {
console.log("res.data",res.data);
$scope.useFriendList = res.data;
$scope.facebookFriendModal.show();
$rootScope.hideLoader();
})
},
error: function (error) {
$rootScope.hideLoader();
Toast.error(JSON.strigify(error));
}
});