• python3.7 (or 3.5, 3.6. Kivy does not support python3.8)
• kivy 1.11.1
• twisted (for the server)

If you are running server from console, you probably need to run:

$ PYTHONPATH=`pwd` python server/ServerMain.py

Same as server:

PYTHONPATH=`pwd` python client/mainApp.py