Failed to add authkey / Failed to update DB on Panorama 12.1.6

[cpcpcptest176]

Hi experts,

We are encountering the following error when trying to add an auth key on Panorama:

"Server error: Failed to add authkey. Failed to update DB."

This is a freshly deployed Panorama VM (PAN-OS 12.1.6) on ESXi.

Current environment  (show system info):

• system-mode: management-only

• num-cpus: 4

• ram-in-gb: 8

We understand that Panorama may require higher resources, but I would like to confirm:

Has anyone seen this error caused by insufficient resources (especially memory) in a fresh deployment?

Or should I investigate other causes such as DB or process issues?

Thanks in advance.