folder resolves the issue. This is especially true for Python/PyQt5 developers. Locate the Source: Search your computer for a folder named pyqt5_tools or look in your Python directory: ...\site-packages\PyQt5\Qt5\plugins\ Copy the Folder: Copy the entire folder (it contains files like qwindows.dll Paste in Application Directory:
The plugin must be placed in the correct relative path: <app_dir>/platforms/qwindows.dll (Windows) or <app_dir>/platforms/libqxcb.so (Linux). qt platform plugin download repack