As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHTS EICAS ADVISORY MESSAGE DISPLAYED. EMERGENCY LIGHTS SWITCH NOT IN ARMED POSITION, OR SWITCH IN ARMED POSITION AND EMERGENCY LIGHTS TURNED ON BY FLT ATTENDANT.SUPPLEMENTAL DATA UPDATE FOUND EMERGENCY LIGHT SWITCH AT 1L ATTENDANT GUARD WAS ACTIVATED. ALSO SWITCH BULB WAS OUT. REPAIRED GUARD AND REPLACED SWITCH BULB OPS CHECKED OK.