So due to my curiosity and testing I have update to 21.0.0 and downgraded to 20.1.0, 20.2.0, etc, to 20.5.0 and still the same 8000000000000073 damn file.
Oh my God... I love you. I've been trying to figure out how to solve this for literally the last 24hrs.
You are a hero amongst heroes my friend.
PS. It was exactly that [8000000000000073] file.
Sysmmc > SYSTEM > SAVE > and delete [8000000000000073] > DONE.
I rebooted and it was as if never...