URDF Visualization in VR

[hu-po]

Thanks for the great repo! I am running into issues when trying to visualize a URDF file in a VR headset. I can run the mars rover example fine and see it in the headset with textures/materials. My URDF file also works fine on the browser (though it has the white default material even though material is defined in the urdf). When I try my URDF file on the VR headset (QuestPro via ngrok) I cannot see anything (meshes or textures). I have tried various formats (obj, gltf, glb) and different materials, but still no luck. Any ideas around what might be happening? Or how I could set a default material of some sort for the URDF?