To my knowledge docker_bridge_cidr is a warning so should not be the issue. See similar bug reported here: https://github.com/Azure/AKS/issues/4151. Did the deploy fail?
docker_bridge_cidr parameter has been deprecated and removed from the AKS API. https://github.com/Azure/AKS/issues/3534
Maybe try and update your Azure CLI using:
az upgrade
You can mark it 'Accept Answer' and 'Upvote' if this helped you
Regards,
Abiola