Those error messages don’t come from My Ecobee device as they don’t follow my standards. The error messages probably come from the stock ST device (Ecobee Connect).
FYI, there were some ecobee API timeout issues yesterday, and they should be resolved by now. My code will recover any timeout issues that don’t last more than 24 hrs. This is not related to my code per se, but the connection between ST and ecobee.