az ml account and az ml env command throwing error

[ghost]

Following this tutorial to deploy Keras Model:
https://github.com/Azure/DeepLearningModelDeployment/blob/master/Keras_TF_CNN_DeployModel.ipynb

I am working on a vm provided on azure platform
Under Deploy Model as a Web Service section,I am facing the following issues:

1. When running this command:
   !az ml account modelmanagement create -l $LOCATION -n $MM_ACCOUNT -g $YOUR_RESOURCE_GROUP

It throws: az ml: 'account' is not in the 'az ml' command group. See 'az ml --help'.

2.Similarly for
!az ml env setup --cluster -l $LOCATION -n $CLUSTER_ENV_NAME -g $YOUR_RESOURCE_GROUP
It throws:
az ml: 'env' is not in the 'az ml' command group. See 'az ml --help'.

What am I missing here?