As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: AFTER TAKEOFF L4 DOOR SLIDE LIGHT WENT OUT WITH DOOR ARMED. FLASHED ON AND OFF WHEN FLIGHT ATTENDANT TOUCHES HANDLE.. REMOVED DEBRIS FROM L4 DOOR AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK PER AMM 52-73-00.