TypeError: unknown type (null) in on_modelfilter_row_has_child_toggled (#9992) · Issues · gajim / gajim

TypeError: unknown type (null) in on_modelfilter_row_has_child_toggled

Versions

OS: Windows 10
GTK+ Version: 3.24.1
PyGObject Version: 3.32.1
python-nbxmpp Version: 0.6.10
Gajim Version: 1.1.3

Traceback

Traceback (most recent call last):
  File "C:/msys64/home/appveyor/gajim/win/_build_root/mingw64/lib/python3.7/site-packages/gajim/roster_window.py", line 3974, in on_modelfilter_row_has_child_toggled
  File "C:/msys64/home/appveyor/gajim/win/_build_root/mingw64/lib/python3.7/site-packages/gi/overrides/Gtk.py", line 1115, in __getitem__
TypeError: unknown type (null)

Steps to reproduce the problem

Unfortunately I have no idea why this happened, Gajim has been running for days and I just saw this when I unlocked my PC (no standby, just locked screen). First time I've seen this.