Unable to Add Network Rule to CosmosDb

This is autogenerated. Please review and update as needed.

Describe the bug

Command Name az cosmosdb network-rule add

Errors:

'NoneType' object has no attribute 'virtual_network_rules'
Traceback (most recent call last):
python3.8/site-packages/knack/cli.py, ln 215, in invoke
    cmd_result = self.invocation.execute(args)
cli/core/commands/__init__.py, ln 654, in execute
    raise ex
cli/core/commands/__init__.py, ln 718, in _run_jobs_serially
    results.append(self._run_job(expanded_arg, cmd_copy))
cli/core/commands/__init__.py, ln 711, in _run_job
    six.reraise(*sys.exc_info())
...
cli/core/commands/__init__.py, ln 325, in __call__
    return self.handler(*args, **kwargs)
azure/cli/core/__init__.py, ln 545, in default_command_handler
    return op(**command_args)
cli/command_modules/cosmosdb/custom.py, ln 955, in cli_cosmosdb_network_rule_add
    for rule in existing.virtual_network_rules:
AttributeError: 'NoneType' object has no attribute 'virtual_network_rules'

To Reproduce:

Steps to reproduce the behavior. Note that argument values have been redacted, as they may contain sensitive information.

• az cosmosdb network-rule add --name {} --subnet {} -g {}

Expected Behavior

Network rule for the vnet added successfully

Environment Summary

macOS-10.15.4-x86_64-i386-64bit
Python 3.8.3
Installer: HOMEBREW

azure-cli 2.7.0

Extensions:
image-copy-extension 0.2.1

Additional Context

[shurd]

We have updated the swagger so that the SDK will provide an error message when the account does not exist. This change will be in the next SDK release and then can be applied to the CLI. Target is middle of August release.

[MehaKaushik]

As a part of S175(https://github.com/Azure/azure-powershell/milestone/109), a CosmosDB was updated. @sireza please verify if your issue is resolved now.