Hello T- cius!
Make sure your Authorization Save Mode isn't set to Unhandled in the settings window of the tool.
Hi, my Save Mode is set to Player Prefs but I am getting this same issue when I try to upload a score. It gives me the error but then prints the "Initializing..." & "Initialized!" prompts however it does not seem to have worked and the leaderboard remains empty. I'm not sure what I'm doing wrong?
I also get a separate error when trying to download scores, which is object reference not set to an instance of an object, and then refers to this line in LeaderboardCreator.GetLeaderboard(...) function -
_behaviour.SendGetRequest(GetServerURL(Routes.Get, query), callback, errorCallback);