Ah, I missed the fact that you had shared the game. I don't know if that's an old version of the game, but it's still using the gzip packing method. There's an error when trying to unpack the gzipped content. I'm not sure what the problem is yet, but I'll try to fix it in a later release.
Before uploading your game, you can confirm which packing method it used by opening [game name].zip/manifest/default.json, and seeing at the very end, "libraryArgs":["lib/default.pak","gzip"]. Here the packing method used is gzip.