And regarding a question of yours that I missed. I just updated Home Assistant a couple of weeks ago for the first time in about six months and my slider still works fine. The size changed for some reason. I’m not sure if your slider looked a little skinnier than the normal mushroom sliders, mine did after the update, and I just tweaked the height in the code. But other than that it works fine.
Thanks for sharing those screenshots James. Very helpful. I’ve configured mine like yours now and tested the scripts and they run fine, but still have the error come up. Suspect its something to do with my mushroom card coding. I’ll keep at it!