Siri says "You'll need to unlock your iPhone first"
I added hardware to allow Siri commands to open and close my overhead garage door; and everything worked fine until the final test in which I said "Hey Siri, open garage door." To my amazement, Siri replied "You'll need to unlock your iPhone first." WHAT? I'm like, Says Who??? Eventually I did unlock the iPhone and Siri opened the garage door, but honestly, this is unacceptable. Oh, yes, she'll close the door without complaint. I'm using iPhone 7 and iOS 13.4.1. Any suggestions would be most appreciated, thanks!
iPhone 7, iOS 13