How to fix “ImportError: unable to find Qt5Core.dll on PATH” after pyinstaller bundled the python application

Question

Can\'t run QT based GUI application bundled by pyinstaller, the console output shows it is due to an import error:

ImportError: unable to find

Answer 1

Assuming you don't absolutely need PyQt5 version 5.13.0, the easiest fix is to simply downgrade PyQt5 to version 5.12.2 using:

pip install pyqt5==5.12.2

and your executable will work as expected.