threejs exported model not opening in AR

[0xhrsh]

I tried looking for duplicates but couldn't find anything to solve my issue.

So I exported a 3d from a 3js script, but it is not opening in scene-viewer; it shows, "Looks like there's something wrong with this object". (no errors in gltf-viewer).

If I import that 3d model in blender and export it, it works!

3js exported: demo, model URL
3js -> blender: demo, model URL