For me, as far I remember, to fix the issue on my local machine, I have to
remove python and reinstalled it.It seems that after upgrading ubuntu18 to
ubuntu focal, some python 2 footprints still remains, I am not sure if it
was the cause of issue but after removing python and purging both python2
a
Public bug reported:
I was about to upgrade ubuntu 18 to ubuntu 20, but it says “Your python3
install is corrupted. Please fix the '/usr/bin/python3'”, So i tried to run
sudo ln -sf /usr/bin/python2.7 /usr/bin/python as suggested in
https://askubuntu.com/questions/1185813/how-to-fix-ubuntu-19-0