Gotcha, so I tried loading the game (which reads from the phantom file) as soon as it enters the room, but then the game just freezes. Getting this error:
However, I think I know what's going on! I was doing some research earlier tonight and starting looking into the actual errors themselves. 403 is a permissions error, which I think means my game isn't able to access the save file on the remote server. So what I believe is happening (just an educated guess) is that somehow, the game thinks a save file exists, but when it goes to grab it from itch's remote server, it doesn't actually exist so is producing the errors above. I checked GMS2's documentation for "file_exists" and found something really interesting: https://manual.yoyogames.com/GameMaker_Language/GML_Reference/File_Handling/File...
They specifically say:
"Note that the function can only be used to check local files, but not any files stored on a remote server."
So I'm assuming that's the error, since the way I'm checking save files is using that function. However, I do know that you're also using that same function in your code and it's working, so I'm really not sure what's going on 😅.