[Python] MSIX Packaging Tool - Failing Installation

I am trying to create a Windows app from the following simple Python code.

from qtpy.QtWidgets import QApplication, QLabel
from qtpy.QtCore import Qt

if __name__ == "__main__":
# Create the application instance
app = QApplication([])

# Create a fullscreen label
label = QLabel("Hello World!")
label.setStyleSheet("font-size: 40px; text-align: center;") # Increase text size
label.setAlignment(Qt.AlignCenter) # Center the text
label.showFullScreen() # Make it fullscreen

# Run the application event loop
app.exec_()


PyInstaller is used to create a single executable and Inno Setup Compiler to convert the executable to an installer.

Lastly, MSIX Packaging Tool converts the installer to an MSIX app installer.

The installation of the msix file fails with the following error:

App installation failed with error message: Common:eployment::MsixvcStagingSession::GetManifestReader in MsixvcStagingSession failed with error 0x80070570. (0x80070570)
​

What could be the reason of this error and are there any other, less cumbersome, methods to create a Windows app from a Python project?

The end-goal would be to create a Python UI in QtPy that runs on a Windows machine in single app kiosk mode.

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