Ring Video 2 doorbell setup

Hi

I’m having some issues with my Ring Video 2 doorbell setup. If I run HASS “live” with the command

sudo hass -c /home/pi/.homeassistant/ --open-ui

then the sensors all show up correctly. However if I start HASS as a service

sudo systemctl start [email protected]

then I get no sensors and my logs contain the errors

Unable to prepare setup for platform sensor.ring: Could not setup all dependencies.
3:53 PM setup.py (ERROR)

Can anyone suggest why I am getting dependency errors only when trying to run as a service?

Thanks