Thetford Toilet Vacuum Breaker Leak

[Hazman65]

So my trailer is just days past its warranty and I notice water around the base. I had just finished flushing the black tank so I thought maybe it was that. I clean up the water and add a pack to the tank and when I press the foot pedal I notice water spraying out of the top on the back of the toilet. I guess this is a vacuum breaker and it looks fairly easy to fix. Has anyone had any experience with this and are there any issues I should be aware of? The top of the unit has an opening in it. I didn’t find any parts on the floor so I assume it is supposed to be open but this is where the water is coming from.

[hoppers4]

It's not that expensive and fairly easy to replace. It's probably a combo flush valve and vacuum break.