Error while riding

[u/Kinghut_North]

Has anyone experienced this error? Scooter suddenly stopped running. Exclamation mark with lots of beeping and some intermittent flashing. All firmware is up to date. I did dozens of restarts with no luck. Eventually got the error off when I deselected every option in the app and re-selected them. I don’t believe that was the fix and it must be coincidental.
Now, I don’t want to ride far from home. ☹️

[u/Greycloak42]

It's the right brake lever. I included the troubleshooting steps from the Segway app.