journalctl reports No module named GPUtil

/home/user/turing/python3 main.py works. 
That tells me all modules are loaded in python3. 
My login is user.

moved /home/user/turing/ to /opt
copied .service to /etc/systemd/system/
sudo systemctl daemon-reload

sudo systemctl start turing.service fails

journalctl -u turing.service says No module GPUtil


Linuxmint 21.3, python3.10.12, turing display 3.5 inch
