I keep getting a notification that an update is available, but for some reason I can't find where this update is. I checked all the apps in the app center and none indicate an update is available. Just before this happened I unintentionally uninstalled the app center, I reinstalled it and that is when I got the notification. Then restarted the pc and it gave me the notification again. I tried sudo apt update/upgrade and found a package for amd 64 which might have something to do with my cpu, but I don't think that is something that this OS (JUNO) would notify me of.
Please open appcenter and click on Installed tab and you'll see the updates available. And please do installed updates they are necessary.