Well I doubt this will fix the error but you have all your choices seperated out from each other. I would put goto and labels instead of the way you have set it out it will be much neater. I don’t remember if it is this error but usually in my choices they have choices and that means I sometimes miss a } so try to put one of those after one of them and if it doesn’t work then try to go down them and if none of them work then if you copy an paste it here and I will see if I can find the issue.
One thing that came up when using gem choices for me was that you need to title them next to the choice. At least that’s an issue that came up for me but this is what I had to put. I am not the most experienced with gem choices so if that’s what is affecting it I can’t really help.
choice (support the author)