Locked out from my nexus 6p

[rapidd]

For the last two years, I have been unlocking my phone with either fingerprint or a pattern. When I wake up today, it asks for a pin. I have no idea what the pin is. Tried several possible pin I would have set and now I have 3 more attempts left. Help

 

[B. Diddy]

Welcome to Android Central! Does that show up if you boot into Safe Mode as well? https://support.google.com/nexus/answer/2852139?hl=en