Comment 0 for bug 1965568

When I try to execute `do-release-upgrade -d` on a 20.04 system, the following fatal error occured.

Traceback (most recent call last):

File "/tmp/ubuntu-release-upgrader-yqb1e837/jammy", line 8, in
<module>
sys.exit(main())

File
"/tmp/ubuntu-release-upgrader-yqb1e837/DistUpgrade/DistUpgradeMain.py",
line 222, in main
from .DistUpgradeController import DistUpgradeController

File
"/tmp/ubuntu-release-upgrader-yqb1e837/DistUpgrade/DistUpgradeController.py",
line 25, in <module>
import dbus

ModuleNotFoundError: No module named 'dbus'