az containerapp registry show raises error if there are no registry configs #32107
Description
Describe the bug
Running az containerapp registry show when there are no configuration entries for any registry, the command raises an error.
Related command
az containerapp registry show -n my-container-app -g my-rg --server my-registry.azurecr.io
Errors
Here is the traceback:
'NoneType' object is not iterable
Traceback (most recent call last):
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\knack/cli.py", line 233, in invoke
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/__init__.py", line 666, in execute
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/__init__.py", line 734, in _run_jobs_serially
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/__init__.py", line 703, in _run_job
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/__init__.py", line 336, in __call__
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/command_operation.py", line 362, in handler
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/arm.py", line 478, in show_exception_handler
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/command_operation.py", line 360, in handler
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/command_modules/containerapp/custom.py", line 2897, in show_registry
TypeError: 'NoneType' object is not iterable
Issue script & Debug output
Request URL: 'https://management.azure.com/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/my-rg/providers/Microsoft.App/containerApps/my-container-app?api-version=2025-01-01'
Request method: 'GET'
Request headers:
'User-Agent': 'python/3.13.7 (Windows-11-10.0.26100-SP0) AZURECLI/2.77.0 (MSI)'
'Accept-Encoding': 'gzip, deflate'
'Accept': '*/*'
'Connection': 'keep-alive'
'x-ms-client-request-id': 'fa8fbc48-7ece-4403-aea9-10c6212bf8de'
'CommandName': 'containerapp registry show'
'ParameterSetName': '-n -g --server --verbose'
'Authorization': 'Bearer ...'
Request body:
None
Response status: 200
Response headers:
'Cache-Control': 'no-cache'
'Pragma': 'no-cache'
'Content-Length': '4326'
'Content-Type': 'application/json; charset=utf-8'
'Expires': '-1'
'Vary': 'Accept-Encoding'
'x-ms-ratelimit-remaining-subscription-reads': '249'
'api-supported-versions': '2022-03-01, 2022-06-01-preview, 2022-10-01, 2022-11-01-preview, 2023-04-01-preview, 2023-05-01, 2023-05-02-preview, 2023-08-01-preview, 2023-11-02-preview, 2024-02-02-preview, 2024-03-01, 2024-08-02-preview, 2024-10-02-preview, 2025-01-01, 2025-02-02-preview, 2025-07-01, 2025-10-02-preview'
'X-Powered-By': 'ASP.NET'
'x-ms-ratelimit-remaining-subscription-global-reads': '3749'
'x-ms-request-id': 'e97352c6-06b4-4ab2-9059-4b3a31403d9a'
'x-ms-correlation-request-id': 'e97352c6-06b4-4ab2-9059-4b3a31403d9a'
'x-ms-routing-request-id': 'WESTEUROPE:20250912T133147Z:e97352c6-06b4-4ab2-9059-4b3a31403d9a'
'Strict-Transport-Security': 'max-age=31536000; includeSubDomains'
'X-Content-Type-Options': 'nosniff'
'X-Cache': 'CONFIG_NOCACHE'
'X-MSEdge-Ref': 'Ref A: 00A64A11AA8F48AAA019BF07C44254E9 Ref B: AMS231032607007 Ref C: 2025-09-12T13:31:47Z'
'Date': 'Fri, 12 Sep 2025 13:31:47 GMT'
Response content:
{"id":"/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/my-rg/providers/Microsoft.App/containerapps/my-container-app","name":"my-container-app","type":"Microsoft.App/containerApps","location":"UK South","systemData":{"createdBy":"...","createdByType":"User","createdAt":"2025-09-12T11:12:59.7873638","lastModifiedBy":"...","lastModifiedByType":"User","lastModifiedAt":"2025-09-12T13:19:18.7222447"},"properties":{"provisioningState":"Failed","runningStatus":"Running","managedEnvironmentId":"/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/my-rg/providers/Microsoft.App/managedEnvironments/managedEnvironment-my-rg-0000","environmentId":"/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/my-rg/providers/Microsoft.App/managedEnvironments/managedEnvironment-my-rg-0000","workloadProfileName":"Consumption","outboundIpAddresses":["20.108.216.9","20.108.217.125","74.177.201.70","131.145.91.209","4.158.91.74","4.158.89.64","131.145.40.6","74.177.198.189","85.210.223.160","74.177.245.93","74.177.198.181","131.145.77.209","20.108.124.221","74.177.162.123","20.26.109.122","131.145.124.57","85.210.222.64","20.26.109.180","74.177.141.127","85.210.223.56","74.177.245.142","131.145.83.126","131.145.99.107","20.108.125.221","4.159.25.18","4.158.92.46","20.162.145.125","4.158.143.149","4.158.143.92","4.250.234.44","20.90.238.99","20.90.239.180","85.210.163.187","74.177.240.109","172.166.80.179","131.145.9.241","85.210.166.17","85.210.48.136","74.177.120.102","131.145.48.93","85.210.163.208","74.177.193.62","20.108.130.227","51.142.67.19","20.254.83.139","131.145.82.22","20.254.83.138","4.158.232.14","172.166.87.38","74.177.226.250","20.108.130.191","85.210.25.6","85.210.24.221","4.158.34.249","20.162.138.167","4.158.113.223","4.159.3.89","4.158.100.28"],"latestRevisionName":"my-container-app--aaaaaaa","latestReadyRevisionName":"my-container-app--aaaaaaa","latestRevisionFqdn":"my-container-app--aaaaaaa.yes.uksouth.azurecontainerapps.io","customDomainVerificationId":"...","configuration":{"secrets":null,"activeRevisionsMode":"Single","ingress":{"fqdn":"my-container-app.yes.uksouth.azurecontainerapps.io","external":true,"targetPort":8080,"exposedPort":0,"transport":"Auto","traffic":[{"weight":100,"latestRevision":true}],"customDomains":null,"allowInsecure":false,"ipSecurityRestrictions":null,"corsPolicy":null,"clientCertificateMode":null,"stickySessions":{"affinity":"none"},"additionalPortMappings":null},"registries":null,"dapr":null,"runtime":null,"maxInactiveRevisions":100,"service":null,"identitySettings":[]},"template":{"revisionSuffix":"","terminationGracePeriodSeconds":null,"containers":[{"image":"docker.io/hello-world:latest","name":"my-container-app","env":[],"resources":{"cpu":0.5,"memory":"1Gi","ephemeralStorage":"2Gi"}}],"initContainers":null,"scale":{"minReplicas":0,"maxReplicas":10,"cooldownPeriod":300,"pollingInterval":30,"rules":null},"volumes":null,"serviceBinds":null},"eventStreamEndpoint":"https://uksouth.azurecontainerapps.dev/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/my-rg/containerApps/my-container-app/eventstream","delegatedIdentities":[]},"identity":{"type":"UserAssigned","userAssignedIdentities":{"/subscriptions/00000000-0000-0000-0000-000000000000/resourcegroups/my-rg/providers/Microsoft.ManagedIdentity/userAssignedIdentities/ContainerApps":{"principalId":"00000000-0000-0000-0000-000000000000","clientId":"00000000-0000-0000-0000-000000000000"}}}}
The command failed with an unexpected error. Here is the traceback:
'NoneType' object is not iterable
Traceback (most recent call last):
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\knack/cli.py", line 233, in invoke
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/__init__.py", line 666, in execute
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/__init__.py", line 734, in _run_jobs_serially
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/__init__.py", line 703, in _run_job
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/__init__.py", line 336, in __call__
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/command_operation.py", line 362, in handler
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/arm.py", line 478, in show_exception_handler
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/core/commands/command_operation.py", line 360, in handler
File "D:\a\_work\1\s\build_scripts\windows\artifacts\cli\Lib\site-packages\azure/cli/command_modules/containerapp/custom.py", line 2897, in show_registry
TypeError: 'NoneType' object is not iterable
Expected behavior
A message that no registry configurations are present in the container app
Environment Summary
azure-cli 2.77.0
core 2.77.0
telemetry 1.1.0
Extensions:
account 0.2.5
deploy-to-azure 0.2.0
Dependencies:
msal 1.34.0b1
azure-mgmt-resource 23.3.0
Python location 'C:\Program Files\Microsoft SDKs\Azure\CLI2\python.exe'
Config directory 'C:\Users\user.azure'
Extensions directory 'C:\Users\user.azure\cliextensions'
Python (Windows) 3.13.7 (tags/v3.13.7:bcee1c3, Aug 14 2025, 14:15:11) [MSC v.1944 64 bit (AMD64)]
Legal docs and information: aka.ms/AzureCliLegal
Your CLI is up-to-date.
Additional context
I'm working in an Azure for Students subscription with my school account, if that matters.