Thanks JorgeB! Based off this, looks like the affected device should be the 960 Evo I have installed. This is a device I am not using presently so this should be nbd, I will get this removed and continue to watch the log on this machine!
Mar 28 04:33:41 i3 kernel: pcieport 0000:00:1d.0: AER: Corrected error received: 0000:0c:00.0
Mar 28 04:33:41 i3 kernel: nvme 0000:0c:00.0: PCIe Bus Error: severity=Corrected, type=Physical Layer, (Receiver ID)
Mar 28 04:33:41 i3 kernel: nvme 0000:0c:00.0: device [144d:a804] error status/mask=00000001/00006000
Mar 28 04:33:41 i3 kernel: nvme 0000:0c:00.0: [ 0] RxErr