OneNote importer Add-on: Transferring notes from one note to Anki

An error occurred. Please start Anki while holding down the shift key, which will temporarily disable the add-ons you have installed.
If the issue only occurs when add-ons are enabled, please use the Tools>Add-ons menu item to disable some add-ons and restart Anki, repeat until you discover the add-on that is causing the problem.
When you’ve discovered the add-on that is causing the problem, please report the issue on the add-ons section of our support site.
Debug info:
Anki 2.1.66 (70506aeb) Python 3.9.15 Qt 6.5.2 PyQt 6.5.2
Platform: Windows-10-10.0.19045
Flags: frz=True ao=True sv=3
Add-ons, last update check: 2024-03-25 11:16:57
Add-ons possibly involved: ⁨OneNote importer⁩

Caught exception:
Traceback (most recent call last):
File “C:\Users\user\AppData\Roaming\Anki2\addons21\”, line 66, in importMHT
parser = Parser(file_path)
File “C:\Users\user\AppData\Roaming\Anki2\addons21\1971641744\”, line 17, in init
html, content_location = Text.html(self.message)
TypeError: cannot unpack non-iterable NoneType object

That add-on hasn’t been updated since 2019, so it isn’t surprising that it is failing with a more recent version.