mjhjmtu

I have installed Kazam most recent version in my computer (Pop!_OS 18.04 LTS) but does not shows up when I click on the icon and when I try to launch it from the terminal I get the next error message

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

```

I tried other proposed solutions link but didn't work. Actually I think it is a different problem. Can someone help me?