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Joiplay version doesn't matter. I think you are running the Ren'Py plugin 8.4.1, which changed a lot of stuff and fails at reading older versions code. You need to install the Ren'Py plugin 8.3.7, that's the one that was used to make the game: )

And everytime you try to run a game and fails, check the logs to see what version of Ren'Py they used so you can install the same

You need the Ren'Py plugin ver. 8.3.7 to run it, which is the one that was used to make the game. You can use the same ver. of joiplay that you already have: )