Invalid mesh issue

Hello, I’m currently working on adding an output mesh to a Rhino object, but I’m encountering issues where the mesh becomes complex and invalid. Despite attempting to use functions like UnifyNormals and RebuildNormals , the mesh remains invalid. How can I convert this complex and invalid mesh into a valid one?Here attaching the sample stl
uploads_files_3928291_rabbit (1).stl (2.8 MB)
When I use the same STL file as input for the Brep in the provided Grasshopper file Lattice.gh (19.4 KB) I can observe that the output mesh is generated and visible.

Supriya -

I read this into the Rhino 8 Beta and here is the Result I get. It runs thru Check fine.

uploads_files_3928291_rabbit_V7.3dm (453.3 KB)

THere does nto seem to be a need to repair the original STL mesh?