Traceback (most recent call last):
File "C:/msys64/home/appveyor/gajim/win/_build_root/mingw64/lib/python3.8/site-packages/gajim/message_window.py", line 326, in _on_window_focus
File "C:/msys64/home/appveyor/gajim/win/_build_root/mingw64/lib/python3.8/site-packages/gajim/groupchat_control.py", line 1701, in set_control_active
File "C:/msys64/home/appveyor/gajim/win/_build_root/mingw64/lib/python3.8/site-packages/gajim/message_window.py", line 663, in redraw_tab
File "C:/msys64/home/appveyor/gajim/win/_build_root/mingw64/lib/python3.8/site-packages/gajim/groupchat_control.py", line 726, in get_tab_label
File "C:/msys64/home/appveyor/gajim/win/_build_root/mingw64/lib/python3.8/site-packages/gajim/groupchat_control.py", line 911, in get_nb_unread
File "C:/msys64/home/appveyor/gajim/win/_build_root/mingw64/lib/python3.8/site-packages/gajim/common/contacts.py", line 272, in can_notify
ValueError
```## Steps to reproduce the problem
...I did nothing. Just started Gajim and wasn't using it. Then reopened and I've noticed there's some error displayed.