Fingerprint Sensor stopped working

My phone was at about 45% battery last night. This morning the phone was black. I plugged it in to get it to start back up (I have this problem intermittently). Phone was still around 40% battery life. But after it started up, the fingerprint sensor is no longer working and I cannot find the settings for it under Security and Location. Has it been moved somewhere else? I searched Support and Tips and followed the directions to try set up my fingerprints again, but there is no fingerprint option now. It was working fine yesterday.

Anyone have any suggestions??
TIA!