Your problem doesn't have anything to do with MSFS 2024, from the log, it seems no Pushback vehicle of any kind has been found, as if the airplane profile is wrong.
And in fact, as confirmed by your error log:
Error: no model for Couatl type Pushback available for ICAO KORD and params {'pushbackType': 2, 'doorHeight': 0, 'aircraftWeight': 442742.65625, 'parkingRadius': 33.0}
It seems there's no passengers door height ( is set to 0 ), which is required to know which pushback vehicle to use, since the door height gives a rough estimate of the cabin clearance.