I think I got the problem
I have this line of code in my notebook.
tts_model, tts_decoder, _ = torch.hub.load(repo_or_dir='snakers4/silero-models',
                                       model='silero_stt',
                                       language='en', # also available 'de', 'es'
                                       device=device)

When I restart the kernel and run the example provided with this line of code the problem occurs.
To reproduce the error try to put this line before your model initialization.