Siri - Unable to run Good Night scene…

For the last couple of days, virtual AI assistant Siri is unable to run one of the standard Apple scenes “Good Night”.

After making my very polite request, I even say please. The response from Siri is…”shortcuts says could not run control home an unknown error occurred”. Not even a Sorry!

I'm able to trigger the scene by selecting it via the Apple Home App, or Eve APP; but it will not trigger verbally via Siri by just saying... " Goodnight". The scene will trigger via Siri if I use the phrase… “Activate the Good Night scene”.

Today… Siri has changed (it’s) mind and the rather overly enthusiastic response to my polite request is… “That’s Done” or “OK”. Which is actually a deception on behalf of the AI, because in actual fact, nothings done - status quo remains. Again, the scene is triggered via Siri if I use the phrase… “Activate the Good Night scene”.

What’s occurred? How do I fix this? 

It's rather a mouthful to say “Activate the Good Night scene” when I'm stumbling into bed, or with a mouthful of toothpaste, or giving the wife a peck on the cheek.