I keep getting this error. The demo starts out fine, but then this error starts appearing more and more until you can't really progress any scenes, save, or even quit out normal.
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While running game code:
File "renpy/common/00action_control.rpy", line 243, in __call__
renpy.hide_screen(self.screen, layer=self._layer, immediately=self.immediately)
TypeError: my_hide_screen() got an unexpected keyword argument 'immediately'