Facebook sdk get friend only return null

I’m try to build two test user already be the friend and login App.


My login function

FB.LogInWithReadPermissions(new List() { “public_profile”, “email”, “user_friends” }, this.EventHandleLogin);


my get friend funcion

FB.API(“/me/friends”, HttpMethod.GET, FriendCallBack);
`public void FriendCallBack(IGraphResult result)
{

    IDictionary<string, object> data = result.ResultDictionary;
    List<object> friends = (List<object>)data["data"];
    Debug.LogError("New Friend Back:" + friends.Count);
    foreach (object obj in friends)
    {
        Dictionary<string, object> dictio = (Dictionary<string, object>)obj;
        Debug.LogError(dictio["name"]+","+dictio["id"]);

    }
}`