The earliest recollection of this bug is traced back to PAN-OS 8.1.11 - January 08, 2024. This bug is fixed in PAN-OS versions 8.1.11. Fixed an issue where a typo in the MIB definition file caused an error message: ERROR: Cannot find symbol panSctpDIamAvpCode when you loaded a PAN-TRAPS.my file. For more information: https://docs.paloaltonetworks.com/pan-os/8-1/pan-os-release-notes/pan-os-8-1-addressed-issues/pan-os-8-1-11-addressed-issues