From jetbot import Robot and core dumped

I download the software pack from GitHub - NVIDIA-AI-IOT/jetbot: An educational AI robot based on NVIDIA Jetson Nano. and want to drive the wheels.
but when I code from jetbot import Robot, There will be error.

When I enter:

cd jetbot/utils
sudo mv jetbot_stats.service /etc/systemd/system/jetbot_stats.service
sudo systemctl enable jetbot_stats
sudo systemctl start jetbot_stats
sudo mv jetbot_jupyter.service /etc/systemd/system/jetbot_jupyter.service
sudo systemctl enable jetbot_jupyter
sudo systemctl start jetbot_jupyter

and restart the robot I also found:

systemctl start jetbot_stats failed
systemctl enable jetbot_jupyter failed

So what should I do?

Sorry for the late response, sugget to open issue at Issues · NVIDIA-AI-IOT/jetbot · GitHub. Thanks

Your Jetbot is a NVIDIA’s reference model or from the 3rd party?