'NoneType' object has no attribute '__name__' error when create deployment via bicep #32312
Description
Describe the bug
Running this command used to work fine but after updating my system, I am now getting the error. I have reproduced with a simple bicep file (see below)
Related command
az deployment group create --name test1 --resource-group test --template-file test.bicep
test.bicep contains:
targetScope = 'resourceGroup'
resource testStorage 'Microsoft.Storage/storageAccounts@2023-06-01' = {
name: 'teststorage${uniqueString(resourceGroup().id)}'
location: resourceGroup().location
sku: {
name: 'Standard_LRS'
}
kind: 'StorageV2'
}
Errors
'NoneType' object has no attribute 'name'
Issue script & Debug output
cli.knack.cli: Command arguments: ['deployment', 'group', 'create', '--name', 'test1', '--resource-group', 'test', '--template-file', 'test.bicep', '--debug']
cli.knack.cli: init debug log:
Enable color in terminal.
cli.knack.cli: Event: Cli.PreExecute []
cli.knack.cli: Event: CommandParser.OnGlobalArgumentsCreate [<function CLILogging.on_global_arguments at 0x7fc29c9b6480>, <function OutputProducer.on_global_arguments at 0x7fc29c797920>, <function CLIQuery.on_global_arguments at 0x7fc29c7c9da0>]
cli.knack.cli: Event: CommandInvoker.OnPreCommandTableCreate []
cli.azure.cli.core: Command index version or cloud profile is invalid or doesn't match the current command.
cli.azure.cli.core._session: Skipping update of file /nix/store/0k0zbk6bj6s8fmh8yvpi2q84avhrr8kp-python3.13-azure-cli-2.78.0/etc/azure/commandIndex.json due to immutable directory.
cli.azure.cli.core._session: Skipping update of file /nix/store/0k0zbk6bj6s8fmh8yvpi2q84avhrr8kp-python3.13-azure-cli-2.78.0/etc/azure/commandIndex.json due to immutable directory.
cli.azure.cli.core._session: Skipping update of file /nix/store/0k0zbk6bj6s8fmh8yvpi2q84avhrr8kp-python3.13-azure-cli-2.78.0/etc/azure/commandIndex.json due to immutable directory.
cli.azure.cli.core: Command index has been invalidated.
cli.azure.cli.core: No module found from index for '['deployment', 'group', 'create', '--name', 'ztest1', '--resource-group', 'ztest', '--template-file', 'test.bicep', '--debug']'
cli.azure.cli.core: Loading all modules and extensions
cli.azure.cli.core: Discovered command modules: ['acr', 'acs', 'advisor', 'ams', 'apim', 'appconfig', 'appservice', 'aro', 'backup', 'batch', 'batchai', 'billing', 'botservice', 'cdn', 'cloud', 'cognitiveservices', 'compute_recommender', 'computefleet', 'config', 'configure', 'consumption', 'container', 'containerapp', 'cosmosdb', 'databoxedge', 'dls', 'dms', 'eventgrid', 'eventhubs', 'extension', 'feedback', 'find', 'hdinsight', 'identity', 'interactive', 'iot', 'keyvault', 'lab', 'managedservices', 'maps', 'marketplaceordering', 'monitor', 'mysql', 'netappfiles', 'network', 'policyinsights', 'privatedns', 'profile', 'rdbms', 'redis', 'relay', 'resource', 'role', 'search', 'security', 'servicebus', 'serviceconnector', 'servicefabric', 'signalr', 'sql', 'sqlvm', 'storage', 'synapse', 'util', 'vm']
cli.azure.cli.core: Loading command modules:
cli.azure.cli.core: Name Load Time Groups Commands
cli.azure.cli.core: acr 0.105 36 149
cli.azure.cli.core: acs 0.075 17 88
cli.azure.cli.core: advisor 0.001 3 6
cli.azure.cli.core: ams 0.003 22 100
cli.azure.cli.core: apim 0.003 14 69
cli.azure.cli.core: appconfig 0.002 9 47
cli.azure.cli.core: appservice 0.014 81 280
cli.azure.cli.core: aro 0.006 1 10
cli.azure.cli.core: backup 0.002 16 61
cli.azure.cli.core: batch 0.039 32 96
cli.azure.cli.core: batchai 0.002 10 30
cli.azure.cli.core: billing 0.007 19 52
cli.azure.cli.core: botservice 0.002 12 42
cli.azure.cli.core: cdn 0.133 8 50
cli.azure.cli.core: cloud 0.001 1 7
cli.azure.cli.core: cognitiveservices 0.001 10 33
cli.azure.cli.core: compute_recommender 0.002 1 1
cli.azure.cli.core: computefleet 0.005 1 1
cli.azure.cli.core: config 0.001 2 7
cli.azure.cli.core: configure 0.001 2 5
cli.azure.cli.core: consumption 0.009 8 9
cli.azure.cli.core: container 0.005 2 17
cli.azure.cli.core: containerapp 0.066 37 123
cli.azure.cli.core: cosmosdb 0.008 58 200
cli.azure.cli.core: databoxedge 0.004 2 2
cli.azure.cli.core: dls 0.001 6 36
cli.azure.cli.core: dms 0.001 3 22
cli.azure.cli.core: eventgrid 0.003 25 96
cli.azure.cli.core: eventhubs 0.010 14 21
cli.azure.cli.core: extension 0.001 1 7
cli.azure.cli.core: feedback 0.000 1 2
cli.azure.cli.core: find 0.001 1 1
cli.azure.cli.core: hdinsight 0.003 9 42
cli.azure.cli.core: identity 0.004 2 7
cli.azure.cli.core: interactive 0.000 1 1
cli.azure.cli.core: iot 0.055 18 81
cli.azure.cli.core: keyvault 0.005 20 114
cli.azure.cli.core: lab 0.020 9 30
cli.azure.cli.core: managedservices 0.005 3 8
cli.azure.cli.core: maps 0.001 5 13
cli.azure.cli.core: marketplaceordering 0.001 1 2
cli.azure.cli.core: monitor 0.309 17 63
cli.azure.cli.core: mysql 0.072 16 56
cli.azure.cli.core: netappfiles 0.025 8 15
cli.azure.cli.core: network 0.082 106 351
cli.azure.cli.core: policyinsights 0.006 9 17
cli.azure.cli.core: privatedns 0.011 14 60
cli.azure.cli.core: profile 0.001 2 8
cli.azure.cli.core: rdbms 0.061 52 217
cli.azure.cli.core: redis 0.001 7 38
cli.azure.cli.core: relay 0.012 7 8
cli.azure.cli.core: resource 0.023 52 234
cli.azure.cli.core: role 0.002 17 62
cli.azure.cli.core: search 0.006 8 20
cli.azure.cli.core: security 0.006 47 98
cli.azure.cli.core: servicebus 0.005 14 17
cli.azure.cli.core: serviceconnector 0.022 20 331
cli.azure.cli.core: servicefabric 0.008 27 80
cli.azure.cli.core: signalr 0.002 10 42
cli.azure.cli.core: sql 0.009 56 219
cli.azure.cli.core: sqlvm 0.018 4 20
cli.azure.cli.core: storage 0.035 62 278
cli.azure.cli.core: synapse 0.007 54 246
cli.azure.cli.core: util 0.001 3 7
cli.azure.cli.core: vm 0.066 60 209
cli.azure.cli.core: Total (65) 1.402 1195 4664
cli.azure.cli.core: Loaded 1181 groups, 4664 commands.
cli.azure.cli.core._session: Skipping update of file /nix/store/0k0zbk6bj6s8fmh8yvpi2q84avhrr8kp-python3.13-azure-cli-2.78.0/etc/azure/commandIndex.json due to immutable directory.
cli.azure.cli.core._session: Skipping update of file /nix/store/0k0zbk6bj6s8fmh8yvpi2q84avhrr8kp-python3.13-azure-cli-2.78.0/etc/azure/commandIndex.json due to immutable directory.
cli.azure.cli.core._session: Skipping update of file /nix/store/0k0zbk6bj6s8fmh8yvpi2q84avhrr8kp-python3.13-azure-cli-2.78.0/etc/azure/commandIndex.json due to immutable directory.
cli.azure.cli.core: Updated command index in 0.003 seconds.
cli.knack.cli: Event: CommandInvoker.OnPreCommandTableTruncate [<function AzCliLogging.init_command_file_logging at 0x7fc29b22d3a0>]
cli.azure.cli.core.azlogging: metadata file logging enabled - writing logs to '/home/p/.azure/commands/2025-10-23.12-10-24.deployment_group_create.13463.log'.
az_command_data_logger: command args: deployment group create --name {} --resource-group {} --template-file {} --debug
cli.knack.cli: Event: CommandInvoker.OnPreArgumentLoad [<function register_global_subscription_argument..add_subscription_parameter at 0x7fc29b2734c0>]
cli.knack.cli: Event: CommandInvoker.OnPostArgumentLoad []
cli.knack.cli: Event: CommandInvoker.OnPostCommandTableCreate [<function register_ids_argument..add_ids_arguments at 0x7fc29b28d800>, <function register_cache_arguments..add_cache_arguments at 0x7fc29b28d9e0>, <function register_upcoming_breaking_change_info..update_breaking_change_info at 0x7fc29b28da80>]
cli.knack.cli: Event: CommandInvoker.OnCommandTableLoaded []
cli.knack.cli: Event: CommandInvoker.OnPreParseArgs [<function _documentdb_deprecate at 0x7fc299349ee0>]
cli.knack.cli: Event: CommandInvoker.OnPostParseArgs [<function OutputProducer.handle_output_argument at 0x7fc29c7979c0>, <function CLIQuery.handle_query_parameter at 0x7fc29c7c9e40>, <function register_ids_argument..parse_ids_arguments at 0x7fc29b28d8a0>]
cli.azure.cli.command_modules.resource._bicep: Current value of "use_binary_from_path": true.
cli.azure.cli.command_modules.resource._bicep: Using Bicep CLI from PATH. Bicep CLI version 0.36.0 (custom)
cli.azure.cli.command_modules.resource._bicep: /home/user/azure/test.bicep(3,22) : Warning BCP081: Resource type "Microsoft.Storage/storageAccounts@2023-06-01" does not have types available. Bicep is unable to validate resource properties prior to deployment, but this will not block the resource from being deployed. [https://aka.ms/bicep/core-diagnostics#BCP081]
cli.azure.cli.core.profiles._shared: Traceback (most recent call last):
File "/nix/store/l8rvwrkmmyclh3wqk1ac9fjrn6hcvxyb-python3.13-azure-cli-core-2.78.0/lib/python3.13/site-packages/azure/cli/core/profiles/_shared.py", line 458, in _get_attr
op = getattr(op, part)
AttributeError: module 'azure.mgmt.resource.deployments' has no attribute 'DeploymentsMgmtClient'
cli.azure.cli.core.azclierror: Traceback (most recent call last):
File "/nix/store/l8rvwrkmmyclh3wqk1ac9fjrn6hcvxyb-python3.13-azure-cli-core-2.78.0/lib/python3.13/site-packages/azure/cli/core/commands/init.py", line 703, in _run_job
result = cmd_copy(params)
File "/nix/store/l8rvwrkmmyclh3wqk1ac9fjrn6hcvxyb-python3.13-azure-cli-core-2.78.0/lib/python3.13/site-packages/azure/cli/core/commands/init.py", line 336, in call
return self.handler(*args, **kwargs)
~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
File "/nix/store/l8rvwrkmmyclh3wqk1ac9fjrn6hcvxyb-python3.13-azure-cli-core-2.78.0/lib/python3.13/site-packages/azure/cli/core/commands/command_operation.py", line 120, in handler
return op(**command_args)
File "/nix/store/0k0zbk6bj6s8fmh8yvpi2q84avhrr8kp-python3.13-azure-cli-2.78.0/lib/python3.13/site-packages/azure/cli/command_modules/resource/custom.py", line 602, in deploy_arm_template_at_resource_group
return _deploy_arm_template_at_resource_group(cmd=cmd,
resource_group_name=resource_group_name,
...<4 lines>...
no_prompt=no_prompt, template_spec=template_spec, query_string=query_string,
validation_level=validation_level)
File "/nix/store/0k0zbk6bj6s8fmh8yvpi2q84avhrr8kp-python3.13-azure-cli-2.78.0/lib/python3.13/site-packages/azure/cli/command_modules/resource/custom.py", line 642, in _deploy_arm_template_at_resource_group
mgmt_client = _get_deployment_management_client(cmd.cli_ctx, aux_subscriptions=aux_subscriptions,
aux_tenants=aux_tenants, plug_pipeline=deployment_properties.template_link is None)
File "/nix/store/0k0zbk6bj6s8fmh8yvpi2q84avhrr8kp-python3.13-azure-cli-2.78.0/lib/python3.13/site-packages/azure/cli/command_modules/resource/custom.py", line 1251, in _get_deployment_management_client
smc = get_mgmt_service_client(cli_ctx, ResourceType.MGMT_RESOURCE_DEPLOYMENTS,
aux_subscriptions=aux_subscriptions, aux_tenants=aux_tenants)
File "/nix/store/l8rvwrkmmyclh3wqk1ac9fjrn6hcvxyb-python3.13-azure-cli-core-2.78.0/lib/python3.13/site-packages/azure/cli/core/commands/client_factory.py", line 83, in get_mgmt_service_client
client, _ = _get_mgmt_service_client(cli_ctx, client_type, subscription_id=subscription_id,
~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
api_version=api_version, sdk_profile=sdk_profile,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
aux_subscriptions=aux_subscriptions,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
aux_tenants=aux_tenants, credential=credential,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
**kwargs)
^^^^^^^^^
File "/nix/store/l8rvwrkmmyclh3wqk1ac9fjrn6hcvxyb-python3.13-azure-cli-core-2.78.0/lib/python3.13/site-packages/azure/cli/core/commands/client_factory.py", line 225, in _get_mgmt_service_client
logger.debug('Getting management service client client_type=%s', client_type.name)
^^^^^^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'name'. Did you mean: 'ne'?
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/nix/store/l8rvwrkmmyclh3wqk1ac9fjrn6hcvxyb-python3.13-azure-cli-core-2.78.0/lib/python3.13/site-packages/azure/cli/core/commands/arm.py", line 109, in handle_template_based_exception
raise CLIError(ex.inner_exception.error.message)
^^^^^^^^^^^^^^^^^^
AttributeError: 'AttributeError' object has no attribute 'inner_exception'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/nix/store/fyf0psacfzfqyrnjiprcnd1c9mmrla5k-python3.13-knack-0.12.0/lib/python3.13/site-packages/knack/cli.py", line 233, in invoke
cmd_result = self.invocation.execute(args)
File "/nix/store/l8rvwrkmmyclh3wqk1ac9fjrn6hcvxyb-python3.13-azure-cli-core-2.78.0/lib/python3.13/site-packages/azure/cli/core/commands/init.py", line 666, in execute
raise ex
File "/nix/store/l8rvwrkmmyclh3wqk1ac9fjrn6hcvxyb-python3.13-azure-cli-core-2.78.0/lib/python3.13/site-packages/azure/cli/core/commands/init.py", line 734, in _run_jobs_serially
results.append(self._run_job(expanded_arg, cmd_copy))
~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
File "/nix/store/l8rvwrkmmyclh3wqk1ac9fjrn6hcvxyb-python3.13-azure-cli-core-2.78.0/lib/python3.13/site-packages/azure/cli/core/commands/init.py", line 726, in _run_job
return cmd_copy.exception_handler(ex)
~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^
File "/nix/store/l8rvwrkmmyclh3wqk1ac9fjrn6hcvxyb-python3.13-azure-cli-core-2.78.0/lib/python3.13/site-packages/azure/cli/core/commands/arm.py", line 114, in handle_template_based_exception
raise CLIError(ex)
knack.util.CLIError: 'NoneType' object has no attribute 'name'
cli.azure.cli.core.azclierror: 'NoneType' object has no attribute 'name'
az_command_data_logger: 'NoneType' object has no attribute 'name'
cli.knack.cli: Event: Cli.PostExecute [<function AzCliLogging.deinit_cmd_metadata_logging at 0x7fc29b22d620>]
az_command_data_logger: exit code: 1
cli.main: Command ran in 3.066 seconds (init: 0.269, invoke: 2.797)
Expected behavior
To create the resources without error
Environment Summary
azure-cli 2.78.0
core 2.78.0
telemetry 1.1.0
Dependencies:
msal 1.33.0
azure-mgmt-resource 24.0.0
Python location '/nix/store/62fdlzq1x1ak2lsxp4ij7ip5k9nia3hc-python3-3.13.7/bin/python3.13'
Config directory '/home/user/.azure'
Extensions directory '/home/user/.azure/cliextensions'
Python (Linux) 3.13.7 (main, Aug 14 2025, 11:12:11) [GCC 14.3.0]
Legal docs and information: aka.ms/AzureCliLegal
Your CLI is up-to-date.
Additional context
No response