The fridg requires DC 12V to operate. Everything is controlled using 12V circuits, even when plugged into 120V or running on gas.
You said "it's all off". I take that to mean there is no display or light on the control panel. If the light inside comes on, you have 12V power getting to the fridg.
On my Norcold there are 2 fuses on the control board under the plastic cover. One is for the 120V heating element and wouldn't stop it from working on gas. All are similar but not necessarily the same.
If you aren't tech savvy, you are probably going to need to take it to a rv repair tech. They may not get to it for a while.
I've had issues in the past where we just bought bags of ice and made it into an ice box for the rest of the trip. It won't keep it frozen but it will keep your food cold. A bit of a pain but usable.