"The GUI requires PyGObject." on Ubuntu 22.04

[ilongshan]

I have install the dependencies as suggested in README, and add the gi

 try:
    import gi
    gi.require_version('Gtk', '3.0')
     from gi.repository import Gtk, Gdk
     HAS_GTK=True

But it still can not open gui

fakexrandr-manage.py gui

with message

The GUI requires PyGObject.

And how to fix it?

[ilongshan]

Have resolved after installing some library. Do not clear which one. Close it.