Unable to load custom 3D from PolyGoogle

Hi guys, I’m fairly new with to coding so it would be awesome if anyone can help me out. I’m trying to load a custom 3D downloadable model from PolyGoogle into Glitch for my AR trial project. Unfortunately, the 3D model itself won’t appear when I place the hiro marker in front of the webcam. Here’s the link to my glitch trial project.

Did I miss anything in the coding?

MOD EDIT: replaced join link with link to public project

Maybe you will want to import an obj or stl file instead?