AER reports working on my Pro WS X570-ACE with Ryzen 5900X
[me@home~]$ dmesg | grep -i aer
[ 0.863356] acpi PNP0A08:00: _OSC: OS now controls [PCIeHotplug PME AER PCIeCapability]
[ 1.112645] pcieport 0000:00:01.1: AER: enabled with IRQ 28
[ 1.112794] pcieport 0000:00:01.2: AER: enabled with IRQ 29
[ 1.112916] pcieport 0000:00:03.1: AER: enabled with IRQ 30
However, it does not with a Ryzen 5700G