Face Id is not available

Everything was working perfectly until the update 14.6 came and i updated my phone to the new version.After completing update i was unable to unlock my phone with face id then i entered my passcode and went to settings to check face id,i reset my face lock and tried to have face id again but the notification came”Face id is not available try setting up face later”.

and i restart my phone 2 times but problem is still there

can someone help?