Severe bug with some types of Prefabs/meshes

[studentloan]

Hello, 

There is an exception in DeformMesh line number 499:

Code:

Vector4 inputTangent = inputMeshTangents[sortedVertexIndex];

This happens on only SOME types of meshes and prefabs and this error only happens when the project
is built as exe (Am using Mono backend as IL2CPP completely fails)

I am attaching the package of the prefab/model in question.

Can please fix? 


Thanks