Water leak in bathroom

[Canadian camper]

My trailer: 2019 242 BH sunset trail
I have a large soft spot between the toilet and vanity. The floor is very uneven, and bubbling in places. I cut the linoleum back and see that there is a lot of moisture so an obvious leak somewhere. No water stains on any walls. I Checked the pipes everywhere in the bathroom but can't find any moisture on any pipes. So I'm guessing it's somewhere between the toilet and sink. Has anyone had this issue, is there a video out there to watch For repair? Sad part is my warranty covers a faulty part but not the damage it caused.
Thanks for any input or advise.

Happy camping y'all

[dagst1]

Have you went under the camper and removed the underbelly? You may find something leaking there.

[Canadian camper]

I haven't. Is it easy to take those under belly panels off ? I'm afraid if I take some off it won't go back on properly.

Appreciate your suggestions!! Thank you!!!

[dagst1]

They are not too hard to take down. I would start with just removing enough to see into that area. You may have a leaking connection that is spraying up on to the floor.

[Lloyd]

If they are the "panels", then yes they come off and go back easily. Much more so than the solid sheet of membrane/plastic type material that I have on mine.

[Wingerdinger]

There have been some issues with the Dometic model 300 toilets, and you might have a leak that is getting into the floor from your toilet.
There is even a 'silent' recall for the problem, perhaps looking in that area?

[The Lone Ranger]

I had a leak that appeared to be coming from my holding tanks. I unscrewed part of the underbelly and and found that the leak was traveling from the bathroom area. After several hours trying to figure mine out, I found that one of the plastic nuts on the "P" trap on the shower was loose, tighten it up and solved the issue. Also, my floor by the entry door was spongy and I tackled replacing 2' x 3' of the floor at the entry, let me tell you this can be quite a task. I also ordered new weather stripping for the door and installed it. Campers that are left uncovered are just asking for trouble, so I had a cover built and I sleep much better.