Any ideas what is going on? I am running HASSIO on a Raspberry Pi 4. Other repos added no problem. This doesn’t add and I copied the URL verbatim from the instructions for the repo. The URL the repo has me add is literally ‘GitHub - yllibed/hassio: Yllibed's HASS-IO add-ons’
Hey, I don’t know what you’re trying to do with this particular add-on, but Z2M has its own GUI which is rather good. The repo you linked has not been updated for four years, which may be why it’s not working.