Anki 2.1.55 Beta 5-6

I’m getting this error in b5 and b6 (not sure I was getting the error message also in previous betas, but definitely not with 2.1.54). Also, one off the TTS voices has been changed (it’s installed correctly and it also works with 2.1.54):

Error
An error occurred. Please use Tools > Check Database to see if that fixes the problem.
If problems persist, please report the problem on our support site. Please copy and paste the information below into your report.
Anki 2.1.55 (ca116699) Python 3.9.15 Qt 6.4.0 PyQt 6.4.0
Platform: Windows-10-10.0.19044
Flags: frz=True ao=False sv=3
Add-ons, last update check: 2022-11-28 08:43:00
Exception in thread Thread-4:
Traceback (most recent call last):
File “threading”, line 980, in _bootstrap_inner
File “threading”, line 917, in run
File “aqt.tts”, line 555, in import_voices
ModuleNotFoundError: No module named ‘winrt’
Exception in threading.excepthook:
Exception ignored in thread started by: <bound method Thread._bootstrap of <Thread(Thread-4, started 13080)>>
Traceback (most recent call last):
File “threading”, line 937, in _bootstrap
File “threading”, line 982, in _bootstrap_inner
File “threading”, line 1264, in invoke_excepthook
AttributeError: ‘ErrorHandler’ object has no attribute ‘flush’
Exception ignored in sys.unraisablehook:
AttributeError: ‘ErrorHandler’ object has no attribute ‘flush’