[Pythonmac-SIG] py2app and pyinstaller on Big Sur

Hello, I'm using Python 3.9 on a Mac running Big Sur and have encountered problems converting GUIs into Mac apps. I'm concerned that the problems may arise from Big Sur itself. *Pyinstaller*: I posted a problem I ran into at https://stackoverflow.com/questions/67593376/pyinstaller-tkinter-script-

[Pythonmac-SIG] py2app: Can successfully create app with alias mode but version built for deployment returns an error message

I'm using Python 3.9 on a Mac running Big Sur and am trying to create an app, MyApplication.app, from a script using py2app. I'm following the process outlined at https://py2app.readthedocs.io/en/latest/tutorial.html . The app itself uses tkinter for creating a GUI. My setup file looks like the fol