As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER PARKING AT THE GATE, THE AFT LEFT DOOR WAS INADVERTENTLY OPENED WITH THE SLIDE ARMED. THE SLIDE FULLY DEPLOYED REACHING THE GROUND BUT DID NOT INFLATE. MAINTENANCE REPLACED THE SLIDE ASSEMBLY AND RESERVICED THE DOOR ASSIST BOTTLE.