As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PREFLIGHT, CREW NOTICED THE EMERGENCY EXIT SIGN BY MAIN CABIN DOOR WAS INOPERATIVE. GROUND MX CREW FOUND THE LENS FOR THE EXIT SIGN HAD COME OFF. ATTACHED THE LENS TO THE SIGN AND PERFORMED AN OPS CHECK THAT PRODUCED SATISFACTORY RESULTS.