Unity Error: "Can't generate normals for blendshape, mesh has no smoothing groups"

Game Engine Game Engine Support and Discussion
1

I’m trying to import an FBX file in Unity but it keeps presenting this error for a a 3d model with shapekeys, “Can’t generate normals for blendshape ‘…’ on mesh ‘…’, mesh has no smoothing groups”. I had a model that worked fine but now my other newer models keeps getting this error.

2

you should ask this question on a unity forum