my note 4 locked by itself and it isn't taking nor my fingerprint nor my password?

[AC Question]

after the latest software update, my note 4 started to have some troubleshooting. it was kind of okay till today. suddenly it locked by itself and it isn't taking my fingerprint nor any password. i tried to restart it and switch it off hoping the fingerprint will show up on the screen but it didn't. anyone can help? or does anybody know another way to unlock my phone?