Karamba3D 'Could not find node at where support index 0 is attached'

I’m trying to apply Karamba 3D’s ‘26_PrincipalMomentsOnShell’ to my SubD.
But There is an error. It says “Could not find node at (4385317.04271447/-274154.058536/80000) where support index 0 is attached.”
How can I fix it?
SubD_PrincipalMomentsOnShell.gh (39.4 KB)
SubD_Karamba3d.3dm (419.2 KB)

Hi, subds need to be converted into meshes before you can analyse them in karamba3d