Hi. The cards “The sun rises in x minutes” and “The sun sets in x minutes” creates a weird fault code when I try to save the flow.
Immediatly after removing the sunset/sunrise card, the flow is possible to save without errors.
Made a flow with the Sunrise and Sunset Cards, no issue with the saving option. There is going on something else with your Homey. I tried on a HP23. I do not know what you have. You should mention it.
Edit: Top right is ment to be “Turn all lights ON”. It is a typo.