This is my first issue submission.
I need help on running Crazyfile-lib-python/example/position/initial_position.py.
I get the following error when I run initial_position.py.

Python is running version 3.7.7.
I have run Install cflib dependencies which is part of https://github.com/bitcraze/crazyflie-lib-python and I confirm that Python is working.
What should I do in the following cases?
best regards
Toji