im trying to download it through the itch.io app idk if that may be messing with it? i tried downloading a different tittle from yours and it says the same thing. I can still download other games on the app tho :o
cannot read property of build? I googled it, And yea it seems It can sometimes happen with downloading from the app, try the website.
I downloaded an app on my computer called Winrarx64 and it will help you download games like these! Hope this helps!