The script doesn't work with Debian 11

[Tabularasah]

The service doesn't start.

/usr/bin/python3 /usr/bin/argononed.py
Traceback (most recent call last):
File "/usr/bin/argononed.py", line 9, in
bus = smbus.SMBus(1)
FileNotFoundError: [Errno 2] No such file or directory

[aemakeye]

mac@raspberrypi:~ $ cat /etc/issue Debian GNU/Linux 11 \n \l

and

mac@raspberrypi:~ $ systemctl status argononed.service ● argononed.service - Argon One Fan and Button Service Loaded: loaded (/lib/systemd/system/argononed.service; enabled; vendor preset: enabled) Active: active (running) since Sat 2023-01-07 21:34:36 GMT; 22h ago

but my hat does not work at all =(