NavMesh building components - How to create a NavMesh in a prefab

We created a cube gameobject and then we generate a prefab. Then we need to create a NavMesh.
We try to do this, adding a Nav Mesh Prefab Instance to the cube prefab. But the Nav mesh is not generated. We try to do a Bake on the prefab without look.

I’m trying to do this too. In the Nav Mesh example here: GitHub - Unity-Technologies/NavMeshComponents at 2018.2

There are prefabs with a Navmesh object inside each one. How were these created? Thanks

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Have you tried baking at scene level and then making a prefab? As in not creating the prefab until after the object you want the bake on has baked?

Bump

Does this help?