urllib.error.HTTPError: HTTP Error 404: Not Found

[FlorianCRD]

Hi,

I use Pytube3 since a couple of weeks and this worked very fine for me.
However, since some days, I am facing the following error and I can't download videos anymore:

File "/usr/lib/python3.8/urllib/request.py", line 649, in http_error_default
raise HTTPError(req.full_url, code, msg, hdrs, fp)
urllib.error.HTTPError: HTTP Error 404: Not Found

This error occurs with the simplest scripts that any programmer would use, such as this one:
https://towardsdatascience.com/the-easiest-way-to-download-youtube-videos-using-python-2640958318ab

I've uninstalled/reinstalled the Pytube3 module with pip many times and restarted my OS, but nothing new!

Thx for the help!