[C&P RV]

Is the inverter switch in the on position? (it's hiding behind the black hydraulic hose in the photo so hard to see).

Have you checked the circuit breakers on the main breaker box inside the RV? There is an Inverter circuit breaker in the breaker box that you might try to switch check and flip it off and on.

You don't mention the year and model of your unit. My 2022 with SolarFlex 400 has the inverter and MPPT inside the front pass through area and not in the battery compartment / hydraulics area. My remote switch / indicator for the inverter is inside the RV. I know the base SolarFlex 200 has all the solar gear and inverter where yours is.

Your Bathroom GFCI is probably not on the inverted circuit. Does it have a yellow tag that says it's on the inverter?