Pyinstaller giving error ("Error loading Python ... no suitable image found")

Question

I have this is issue with pyinstaller on Mac that gives this error when I click on the created executable:

[9888] Error loading Python lib '/Users/Faris/Downloads/as5/dist/startscreen/Python': dlopen: dlopen(/Users/Faris/Downloads/as5/dist/startscreen/Python, 10): no suitable image found.  Did find:
    /Users/Faris/Downloads/as5/dist/startscreen/Python: code signature invalid for '/Users/Faris/Downloads/as5/dist/startscreen/Python'

This is a GUI application that uses PIL and 4 PNG files. How can I fix this?

Answer 1

I had resolved the same trouble with the following:

1. pip3 uninstall pyinstaller
2. brew reinstall python
3. brew install pyinstaller

Answer 2

Take note that on macOS, python3.7.7 or + and python3.8.3 or + are giving the same error, because of the addition of a full-notarization signing for python to avoid gatekeeper alerts.

Just install Python 3.7.6 or Python 3.8.2