It would be amazing if anyone has a solution for my problem (seems, based on some Googling, I'm not the only person with this issue).
I have the 2019 MacBook Pro with TouchBar (T2 Security chip) and experiencing the "Fingerprint Limit Reached" issue when trying to add a new fingerprint, although there are no fingerprints registered on the Mac.
I have tried the Command "xartutil --erase-all" Which was a nightmare with a T2 Security chip as it deleted my data.
I reset my MacBook pro, and tried many other suggested solutions like resetting the SMC, and still no luck...
Kind regards