What is your server's vendor, model and ESXi version?
Model:Proliant DL360 G10
ESXi version: 7.0.0 16324942
I've got the same issue on HPE DL360 G10 Running ESXi 6.7 latest update. Its bloody frustrating as I had the documented issue with the fans which I filtered out and was subsequently fixed in a patch, but these errors that pop up for no reason with nothing in the iLO/physical hardware event log or anywhere I can find are frustrating.
Its almost like its a timeout for a response so it flags it as an error rather than adds it to a recheck