Your code looks fine, to the extent that I can debug it based on screenshots… would you be able to share a full script, a demo, or a github link?
The appearance of Exif in the binary data looks suspicious, though… I guess that could be a texture? I take it you’re running this code in node.js, not in a browser? That’s a bit tricky with textures, see discussion in [Solved] GLTFLoader DRACOLoader in nodejs (but you can probably ignore the parts about Draco).