Ubuntu
software-properties package

  1. Bug #1830914
  2. Comment #11

Comment 11 for bug 1830914

Revision history for this message
SunBear (sunbear-c22) wrote :

I enquired about this issue in Aug 2020 (see https://askubuntu.com/q/1271611/541417). @SteveLanders solution worked for me. https://askubuntu.com/a/1312345/541417.

The following reinstallation procedure that he had shared worked for me:
sudo apt install --reinstall python3-six python3-certifi python3-requests python3-idna
sudo apt install --reinstall software-properties-gtk
software-properties-gtk