BitMessage guide on whonix-wiki returns error

I follow the guide in whonix wiki here http://www.dds6qkxpwdeubwucdiaord2xgbbeyds25rbsgr73tbfpqpt4a6vjwsyd.onion/wiki/BitMessage

user@host:~$ ~/PyBitmessage/src/bitmessagemain.py

I get following error:

user@host:~$ ~/PyBitmessage/src/bitmessagemain.py
ERROR: The msgpack package is not available.It is highly recommended for messages coding.
ERROR: On Debian, try running “apt-get install python-msgpack” as root.
Loading existing config files from /home/user/.config/PyBitmessage/
Using default logger configuration
2022-03-24 17:24:35,831 - CRITICAL - PyBitmessage requires PyQt unless you want to run it as a daemon and interact with it using the API. You can download it from Riverbank Computing | Download or by searching Google for ‘PyQt Download’ (without quotes).
Traceback (most recent call last):
File “/home/user/PyBitmessage/src/bitmessageqt/init.py”, line 5, in
from PyQt4 import QtCore, QtGui
ImportError: No module named PyQt4

whonix-16-ws has only one change and it is the python2 installed. I tried to install the packages python-msgpack and python-qtpy with apt but the packages don’t exist and obviously the python3-msgpack and python3-qtpy installation don’t help.

Without python2 installed in the template the ~/PyBitmessage/src/bitmessagemain.py returned message stating that the file or directory don’t exist.

Seems that the whonix wiki guide don’t work as intended.