I'm going through this tutorial: https://docs.gamesparks.net/tutorials/unity-tutorials-challenges-part-4-facebook-friend-manager

My call to ListGameFriendsRequest is successful, and GS logs that I did get back a list of 3 people, as expected. But then, in my response object passed into my callback is empty.  I've attached the log, which shows first what GS logs automatically, and then an empty object when I log the response object in the callback.  Am I doing something wrong?

Yes, it's sorted.  The function was working fine all along.

Turns out one of my problems was that the response is not serializable, therefore I was unable to debug it by dumping it to a json string.  Something to keep in mind.  You all might already know that, but I'm new here. ;-)  The other problem was that the gameobjects I was creating were getting hidden (my bad).