.apk Upload Failed "Cannot read properties of undefined..."

Have you tried running your apk in developer mode with debugging on? Can you sideload it and run it? I don't have your source so I can't tell exactly what's going on, but it looks like, aside from the other issues, you're requesting permissions you shouldn't unless for a very specific reason, you're building for compatibility across all 3 headsets maybe? And you're explicitly using openxr and no OVR. Not saying this to be offensive, but these 3 things make me think that you're trying to port code or slapped together some code using some tutorial, and not 100% sure what you're doing. And that's fine if you're learning. But if you're doing a build for GearVR or generic for all android VR platforms (and thus the reason for using openxr and not OVR) you're not going to pass review even if it worked.

What device(a) are you intending to target and does your build work at all when you sideload it?