kazam não aparece

Question

Instalei a versão mais recente do Kazam no meu computador (Pop! _OS 18.04 LTS), mas não aparece quando clico no ícone e, quando tento iniciá-lo pelo terminal, recebo a próxima mensagem de erro

user@system:~$ kazam
/usr/bin/kazam:32: PyGIWarning: Gtk was imported without specifying a version first. Use gi.require_version('Gtk', '3.0') before import to ensure that the right version gets loaded.
  from gi.repository import Gtk
Traceback (most recent call last):
  File "<frozen importlib._bootstrap>", line 888, in _find_spec
AttributeError: 'DynamicImporter' object has no attribute 'find_spec'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/bin/kazam", line 147, in <module>
    from kazam.app import KazamApp
  File "/usr/lib/python3/dist-packages/kazam/app.py", line 36, in <module>
    from kazam.backend.prefs import *
  File "/usr/lib/python3/dist-packages/kazam/backend/prefs.py", line 30, in <module>
    from kazam.backend.webcam import Webcam
  File "/usr/lib/python3/dist-packages/kazam/backend/webcam.py", line 24, in <module>
    from gi.repository import GObject, GUdev
  File "/usr/lib/python3/dist-packages/gi/importer.py", line 127, in find_module
    'introspection typelib not found' % namespace)
ImportError: cannot import name GUdev, introspection typelib not found

'' '

Eu tentei outras soluções propostas link mas não funcionou.