There was a cluster of hotel key card failures today. How do I check the PMS and door lock system?

Today, the hotel front desk received continuous feedback about key cards not working, concentrated on the same floor. The engineering department first suspected the door lock batteries, but I instructed the front desk not to batch-reissue cards yet, and instead check the PMS room status, key encoder logs, and the door lock system time. It turned out that after the interface was restarted last…