Hello folks, first post

My wife has a Mk6 Fiesta (a 2004 1.25 Finesse). The boot carpet and some stuff she keeps in the boot was found to be damp the other day. I checked under the carpet and found a quite large open hole which I thought was a possible cause. Picture attached.

Doe anyone know if something is missing like a grommet? Someone ran into the back of the car a few years ago so it did go to a bodyshop, they were idiots too so I'm wondering if they left something out.

Thanks.