As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
L1 DOOR IS UNABLE TO BE DISARMED AFTER LANDING. HANDLES ARE FROZEN IN DOWN POSITION. REMOVED AND INSTALLED THE DOOR EVACUATION SLIDE IAW AMM 52-11-40. FOUND DEBRIS ON DOOR FLOOR FITTING. CLEANED DEBRIS IAW AMM 52-11-00. PERFORMED OPS CHECK. OPS CHECK PASSED.