Python is 3.7.3 Installed a nice new venv. Did all the stuff ChrisR. mentioned. Installation now completes. Rasa is: rasa --version Rasa Version : 2.8.7 Minimum Compatible Version: 2.8.0 Rasa SDK Version : 2.8.2 Rasa X Version : 0.42.3 Python Version : 3.7.3 Operating System : Darwin-20.6.0-x86_64-i386-64bit Python Path : /Users/jochen2.mueller/dev/Rasa/rasa_search_intent_de/venv/bin/python