5GHz 450M ethernet lockup?

Got a 5GHz Medusa today that went down out of nowhere. Ethernet link just quit. Luckily a remote power cycle brought it back up. Logged into it afterwards and the event log says:
ERROR: Unexpected PHY type ID 0xFFFFFFFF at address 25146 for ifnum 2

Can’t say we’ve seen this on any other sectors so far. We’ve been on 20.3.1.1 since shortly after release, so a month and a half / two months now.