Problem with character mesh? controller?

[menguzat]

Hi!
Thanks for the cool asset first of all :)

I seem to have some problem integrating another model though.
https://sketchfab.com/3d-models/gorillamotions-b50cab2736c04d128f417f05008605fd

I tried the gltf, then converted it to .babylon but the same error: the root node is not a mesh.
I used the code from the demo scene to import the mesh and add the character controller.

however, when I check it out in babylon sandbox, I see that the root node is actually a mesh.

What may be the issue?