Saikat2112 , via OnePlus Nord Blue Marble , Jan 20, 2021 : Fingerprint sensor not work good, sometime fali fingerspint and password press than open
Tokolozi , Jan 20, 2021 : Try to re-learn the fingerprint in question. Additionally most fingerprint readers struggle with moist/sweaty fingers, so i made a habit of wiping off my fingers before trying to unlock. Additionally every 72ish hours you will always need to unlock using a code.
H.S.S , via OnePlus Nord , Jan 20, 2021 : Are you in beta version?If not then follow @Tokolozi advice
H.S.S , via OnePlus Nord , Jan 21, 2021 : Its obvious u will face such kind of errors as beta contains too much bugs,you only have to report all these issues in the feedback section.
H.S.S , via OnePlus Nord , Jan 21, 2021 : Don't worry in the stable version everything will be fine.But first you should report it in the feedback section