As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 5579 STL - LANDING GEAR AIR/GROUND FAILURE MESSAGE ON THE EICAS. MAINTENANCE INSPECTED THE SYSTEM AND FOUND A PUSHED PIN ON THE NLG WOW CONNECTOR. AFTER PIN WAS RE-SECURED, AN OPERATIONAL CHECK OF THE SYSTEM WAS PERFORMED WITH NO OTHER DEFECTS NOTED.