"After adding i2c-0 to the config text, this is gone"
That error is expected and just informative so remove what you have done in config file to avoid collateral effects.
I think I know what happens, please could you post here the contents of /home/pi/.signalk/settings.json file?
That error is expected and just informative so remove what you have done in config file to avoid collateral effects.
I think I know what happens, please could you post here the contents of /home/pi/.signalk/settings.json file?