az aks lists fails for some subscriptions where 'ContainerServiceClientConfiguration' object has no attribute 'api_version'

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Describe the bug

Command Name az aks list

Errors:

The command failed with an unexpected error. Here is the traceback:
'ContainerServiceClientConfiguration' object has no attribute 'api_version'
Traceback (most recent call last):
  File "/usr/lib64/az/lib/python3.9/site-packages/knack/cli.py", line 233, in invoke
    cmd_result = self.invocation.execute(args)
  File "/usr/lib64/az/lib/python3.9/site-packages/azure/cli/core/commands/__init__.py", line 663, in execute
    raise ex
  File "/usr/lib64/az/lib/python3.9/site-packages/azure/cli/core/commands/__init__.py", line 726, in _run_jobs_serially
    results.append(self._run_job(expanded_arg, cmd_copy))
  File "/usr/lib64/az/lib/python3.9/site-packages/azure/cli/core/commands/__init__.py", line 697, in _run_job
    result = cmd_copy(params)
  File "/usr/lib64/az/lib/python3.9/site-packages/azure/cli/core/commands/__init__.py", line 333, in __call__
    return self.handler(*args, **kwargs)
  File "/usr/lib64/az/lib/python3.9/site-packages/azure/cli/core/commands/command_operation.py", line 121, in handler
    return op(**command_args)
  File "/usr/lib64/az/lib/python3.9/site-packages/azure/cli/command_modules/acs/custom.py", line 724, in aks_list
    return _remove_nulls(list(managed_clusters))
  File "/usr/lib64/az/lib/python3.9/site-packages/azure/core/paging.py", line 129, in __next__
    return next(self._page_iterator)
  File "/usr/lib64/az/lib/python3.9/site-packages/azure/core/paging.py", line 76, in __next__
    self._response = self._get_next(self.continuation_token)
  File "/usr/lib64/az/lib/python3.9/site-packages/azure/mgmt/containerservice/v2022_07_01/operations/_managed_clusters_operations.py", line 977, in get_next
    request = prepare_request(next_link)
  File "/usr/lib64/az/lib/python3.9/site-packages/azure/mgmt/containerservice/v2022_07_01/operations/_managed_clusters_operations.py", line 962, in prepare_request
    _next_request_params["api-version"] = self._config.api_version
AttributeError: 'ContainerServiceClientConfiguration' object has no attribute 'api_version'

To Reproduce:

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

• Put any pre-requisite steps here…
• az aks list --subscription {}

Expected Behavior

Environment Summary

Linux-5.4.0-1094-azure-x86_64-with-glibc2.35 (Cloud Shell), CBL-Mariner/Linux
Python 3.9.14
Installer: RPM

azure-cli 2.41.0

Extensions:
ai-examples 0.2.5
ml 2.10.0
ssh 1.1.2

Dependencies:
msal 1.20.0b1
azure-mgmt-resource 21.1.0b1

Additional Context

[stephenbuckley-wpp]

Hi Rakesh, I’ve had a ticket open with Azure support relating to this and today was advised of the following regarding cloud shell:

“Cloud shell’s AZ Modules has been updated to version 2.42.0 recently and I can no longer reproduce the error you faced - Could you confirm you see the same on your end?”

At the time of writing I no longer experience this issue when running the exact same az aks list command in Azure cloud shell that was generating errors when I opened this issue. It appears tham my issue was with the version of AZ inside cloud shell, and that a recent update has addressed this.

Thank you for you assistance with this issue.

[RakeshMohanMSFT]

@stephenbuckley-wpp Thank you for the confirmation. I will close this issue now.