No Qt Platform Plugin Initialized - but Launcher loads

[kjpoli]

Howdy,

I'm trying to build a local Avalon pipeline as a demo for my studio, following the normal instructions. The launcher loads fine and the example project imports, I can browse its assets and generally click around the interface, however clicking on and trying to use the Loader or Project Manager throws an error alert
this application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem

so far I've taken a look at my environment variables, and made sure Avalon sees only my Pyqt5 installation from Pip that matches my python version (3.8, windows 64bit), and im confused as to why the main QML launcher could start with QT functioning, but the Loader and Project manager do not. Is there a special concern for these apps ? Any direction for future debugging would be helpful as well. Thanks in advance and let me know if I can provide more information

[tokejepsen]

Would it be possible to post which version of pyqt you are using?

[kjpoli]

absolutely, thanks for the prompt response

pip show PyQt5 reports

Version: 5.14.1
Summary: Python bindings for the Qt cross platform application toolkit
Home-page: https://www.riverbankcomputing.com/software/pyqt/
Author: Riverbank Computing Limited
Author-email: [email protected]
License: GPL v3
Location: c:\users\hornet\appdata\roaming\python\python38\site-packages
Requires: PyQt5-sip

[tokejepsen]

You may wanna try an older version of PyQt5. I cant remember when the cut off point is atm, but for example the docker project uses 5.8.2