Cannot Distribute iOS Apps - failing "app thinning"

I’m starting to lose my mind on this one y’all!
I have a functioning, tested iOS app that I have previously been able to deploy via testflight. I made some changes, I’m updating my build, but now my app doesn’t pass apples “thinning” test, whatever that means. I reverted the changes I made, and even still, failing the thinning test. have a look at this screenshot, the link takes you here

Has anyone found a way to get around this?