:~$ update-manager
Traceback (most recent call last):
File "/usr/bin/update-manager", line 39, in <module>
from UpdateManager.UpdateManager import UpdateManager
File "/usr/lib/python3/dist-packages/UpdateManager/UpdateManager.py", line 28, in <module>
import uaclient.api.u.pro.packages.updates.v1 as ua
ModuleNotFoundError: No module named 'uaclient