In case you are using Blender you will have three options to export your .gltf file:
- glTF Binary (.glb)
- glTF Separate (.gltf + .bin + textures)
- glTF Embedded (.gltf)
If you see the error message
*Please pack all related files to zip file and try again.
then use option 2. glTF Separate (.gltf + .bin + textures), zip the files that have been exported with default settings and try again. Tested on Google Chrome on Macbook Pro 2019 (Intel chip), MacOS 12.1.