I'm honestly not sure at all. I've got no experience with Javascript, and trying to find solutions online hasn't helped. It mentions index.html, which is how itch.io points at the core game files. Try clearing your cache history and see if that fixes it? On Chrome desktop you can type "Clear cache" in the url searchbar and an option will appear automatically.
Hope that helps!
Opening this brought me to a blank page with nothing but the error message that I think is the root of it all:
I assume my computer is the "anonymous caller" here. Either that, or the game is showing up as anonymous. Either way, something's trying to access storage, and it can't. I cleared all cookies twice and made sure nothing on my computer was different from when the game was working. If it's my computer suddenly blocking the game from accessing cloud storage, is there a way I can make my computer allow the game to?
In order, from top to bottom, the links sent me to these spots in (I'm assuming) the game code:


is "Module.locateFilePackage" the file data the game is trying to get?