The second error is probably because you've played other Twine games in the past, and their saves never been cleared up, clogging up the session storage memory.
The easy "fix" is by disabling auto-save in this game. The proper fix is by cleaning up the saves on all the other twine games you have.
The game Content Creator tool directly supports making such interaction. Just need to hope that some kind soul decided to write it out and it'll be in the game.
I am not a writer so adding it myself is... out of my league.
