I followed MeghanM6's recommendation and it worked. See my clarifying notes: 1- Shut down your computer (not restart) 2-AFTER its shut down, hold/press down the start button for 10 seconds (you'll hear a sound like it's about to turn on the computer but it won't actually turn on). Then lift your finger after 10 seconds. 3-Wait 20 seconds or so, and then turn on the computer as normal.  4-Log back in and go the System Preferences and select the "Touch ID" to add your finger prints. I can't believe we have to do this but I'm glad there's a solution for it.