Can't use shortcuts on HomePod

I’ve been using Siri shortcuts on my HomePod for a long time and then have never been any problems. For example, I can say “Hey Siri, Desk On” and it will run the shortcut that turns on the lamp at my desk. Now, whenever I try to run a shortcut, Siri responds with “I don’t know what that means” and I can’t figure it out. It’s driving me crazy!