Hi, thanks for trying our game! I looked into this problem a bit and found that the web version of the game is crashing before the timeline shift in the first scene. I checked the project in Godot and found nothing disconnected, and it runs fine on the downloadable versions, as well. After re-exporting the web version, it still crashes. I'm guessing it's a problem with browser memory, although it is unlikely that every browser made a change that causes web games to leak memory and crash not after a certain time, but before the timeline changes (not even a scene change). It seems more likely that Itch changed something that specifically beefs our web version of the game. For now, you'll have to try the downloadable version on a computer (the game shouldn't even run on mobile, yet it did just fine before).
TL;DR: We haven't changed anything about the game for a month (and it was working fine last I checked), so whatever broke it in this very specific way is pretty much out of our hands. In the meantime, you'll have to play the downloadable version on a computer.