I can't be sure, but you've probably faced with the new security system in Ren'Py that prevents players from loading potentially harmful save files: https://github.com/renpy/renpy/issues/4879
I can't be sure, but you've probably faced with the new security system in Ren'Py that prevents players from loading potentially harmful save files: https://github.com/renpy/renpy/issues/4879