EDIT: TL,DR - the error is meaningless, ignore it.
I've seen this a few times since switching over to hubitat. Running 2.0.2.
Anyone else see this? If I go into the Ecobee Integration app and simply hit done (don't change login info or anything else) it seems to clear up,
app:22018-12-20 04:14:00.484 pm infoHttpResponseException groovyx.net.http.HttpResponseException: Internal Server Error, 500 polling ecobee pollAttempt:1, isThermostatPolled:false, isSwitchesPolled:true, [status:[code:14, message:Authentication token has expired. Refresh your tokens. ]]
app:22018-12-20 03:14:00.432 pm infoHttpResponseException groovyx.net.http.HttpResponseException: Internal Server Error, 500 polling ecobee pollAttempt:1, isThermostatPolled:false, isSwitchesPolled:true, [status:[code:14, message:Authentication token has expired. Refresh your tokens. ]]
app:22018-12-20 02:14:00.450 pm infoHttpResponseException groovyx.net.http.HttpResponseException: Internal Server Error, 500 polling ecobee pollAttempt:1, isThermostatPolled:false, isSwitchesPolled:true, [status:[code:14, message:Authentication token has expired. Refresh your tokens. ]]