It looks like it is trying and failing to open the i2c bus (I didn’t even realise Inky used that). Have you enabled i2c? Some of the Pimoroni installation scripts do that but I can’t see it in the git dump. Run sudo raspi-config, go to interface options and somewhere in there is an option to enable the i2c bus. Enable that, reboot and try it again.
Glad you got it working. Actually, had you rebooted it after the installation? From experience 95% of problems after installing something are fixed by a reboot, it may have fixed itself after one of those anyway.