The earliest recollection of this bug is traced back to PAN-OS 8.1.4 - January 09, 2024.
This bug is fixed in PAN-OS versions 8.1.4.
Fixed an Issue where a process ( mgmtsrvr ) failed on EDL refresh when configured over a Secured Socket Layer (SSL) connection.
For more information:
https://docs.paloaltonetworks.com/pan-os/8-1/pan-os-release-notes/pan-os-8-1-addressed-issues/pan-os-8-1-4-addressed-issues