Baking problem; inaccurate volume results

Grasshopper
1

Hi,
I’m trying to bake this GH model, but it appears with some random chips on a particular corner

unnamed.gh (7.1 KB)
. how can I fix that please?

thanks

2

There are no internalized geometries in your file.

3

Thanks, but what is an internalized geometry? I just noticed I haven’t attached the rhino file: here it is: Untitled.3dm (33.2 KB)