Ya'll are right. In addition to your comments and after looking at several videos on these newer inverter generators, it appears I need to make or buy a Portable Generator Bonding Plug. These generators are made to work with a sticks and bricks instead of the RV.
Here's a cut and paste: Most portable generators are designed with a floating neutral electrical system, not for the electrical system in a RV. RVs , not in the interior breaker panel like a house. All brands of electrical protection products will detect an Open Ground fault and not allow power to enter the RV.
Thanks for the help. It would have taken me longer to find all this without your help.