$ LANG=en_US.utf-8 sudo update-manager-text 
Reading package lists... Done
Building dependency tree        
Reading state information... Done
Building data structures... Done 
Building Updates List
Traceback (most recent call last):
  File "/usr/bin/update-manager-text", line 70, in <module>
    app = UpdateManagerText(data_dir)
  File "/usr/lib/python3/dist-packages/UpdateManagerText/UpdateManagerText.py", line 55, in __init__
    self.fillstore()
  File "/usr/lib/python3/dist-packages/UpdateManagerText/UpdateManagerText.py", line 90, in fillstore
    self.list.pkgs, key=operator.attrgetter("importance"),
AttributeError: 'UpdateList' object has no attribute 'pkgs'
$