App Store License Not Found
Hey ya'll. I'm using a MacBook Pro 15 from 2015 with the 2.8 GHz Intel Core i7 and 16 GB of ram. I have macOS Sierra installed (Version 10.12.2). Between 5 and 10 times a day a message appears that just says "License Not Found". I've seen this before but it has always shown the logo of the app right next to the message. In this one it just shows the logo of the App Store. I can't find any licensing for the App Store. Any ideas on what is causing this and how to fix it?
MacBook Pro with Retina display, macOS Sierra (10.12.2)