Get-AzPrivateEndpointConnection with -ResourceId throw error "Object reference not set to an instance of an object."

[LucasYao93]

Description

if you specify the resource ID of an Azure resource that contains private endpoints that has deleted.the following error message is returned:
Object reference not set to an instance of an object.

Issue script & Debug output

Get-AzPrivateEndpointConnection -ResourceId "/subscriptions/9e223dbe-3399-4e19-88eb-0975f02ac87f/resourceGroups/pl-rg-test/providers/Microsoft.Web/sites/webapp20220424/privateEndpointConnections/lucasprivateendpoint-2dd7aaea-da5d-458a-93b2-f265092efc8a"

DEBUG: ============================ HTTP REQUEST ============================

HTTP Method:
GET

Absolute Uri:
https://management.azure.com/subscriptions/9e223dbe-3399-4e19-88eb-0975f02ac87f/resourceGroups/pl-rg-test/providers/Microsoft.Web/sites/webapp20220424/privateEndpointConnections/lucasprivateendpoint-2dd7aaea-da5d-458a-93b2-f265092efc8a?api-version=2019-08-01

Headers:
x-ms-client-request-id        : c124b500-7e75-4165-8878-242992bb7368
Accept-Language               : en-US

Body:



DEBUG: ============================ HTTP RESPONSE ============================

Status Code:
NotFound

Headers:
Cache-Control                 : no-cache
Pragma                        : no-cache
x-ms-failure-cause            : gateway
x-ms-request-id               : 49c38784-b454-4bb8-b8a9-f3ad4cc2e954
x-ms-correlation-request-id   : 49c38784-b454-4bb8-b8a9-f3ad4cc2e954
x-ms-routing-request-id       : SOUTHEASTASIA:20220511T095047Z:49c38784-b454-4bb8-b8a9-f3ad4cc2e954
Strict-Transport-Security     : max-age=31536000; includeSubDomains
X-Content-Type-Options        : nosniff
Date                          : Wed, 11 May 2022 09:50:47 GMT

Body:
{
  "error": {
    "code": "ResourceGroupNotFound",
    "message": "Resource group 'pl-rg-test' could not be found."
  }
}


DEBUG: ============================ HTTP RESPONSE ============================

Status Code:
NotFound

Headers:
Cache-Control                 : no-cache
Pragma                        : no-cache
x-ms-failure-cause            : gateway
x-ms-request-id               : 49c38784-b454-4bb8-b8a9-f3ad4cc2e954
x-ms-correlation-request-id   : 49c38784-b454-4bb8-b8a9-f3ad4cc2e954
x-ms-routing-request-id       : SOUTHEASTASIA:20220511T095047Z:49c38784-b454-4bb8-b8a9-f3ad4cc2e954
Strict-Transport-Security     : max-age=31536000; includeSubDomains
X-Content-Type-Options        : nosniff
Date                          : Wed, 11 May 2022 09:50:47 GMT

Body:
{
  "error": {
    "code": "ResourceGroupNotFound",
    "message": "Resource group 'pl-rg-test' could not be found."
  }
}


Get-AzPrivateEndpointConnection: Object reference not set to an instance of an object.
DEBUG: AzureQoSEvent: Module: Az.Network:4.16.1; CommandName: Get-AzPrivateEndpointConnection; PSVersion: 7.1.4; IsSuccess: False; Duration: 00:00:01.9598435; Exception: Object reference not set to an instance of an object.;
DEBUG: Finish sending metric.
DEBUG: 5:50:48 PM - GetAzurePrivateEndpointConnection end processing.

Environment data

Name                           Value
----                           -----
PSVersion                      7.1.4
PSEdition                      Core
GitCommitId                    7.1.4
OS                             Microsoft Windows 10.0.22000
Platform                       Win32NT
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0

Module versions

ModuleType Version    PreRelease Name                                ExportedCommands
---------- -------    ---------- ----                                ----------------
Script     2.7.4                 Az.Accounts                         {Add-AzEnvironment, Clear-AzContext, Clear-AzDefault, Connect-AzAccount…}
Script     4.15.0                Az.Network                          {Add-AzApplicationGatewayAuthenticationCertificate, Add-AzApplicationGatewayBackendAddressPool, Add-AzApplicationGatewayBackendHttpSetting, Add-AzApplicationGatewayCustomError…}

Error output

DEBUG: 5:53:21 PM - ResolveError begin processing with ParameterSet 'AnyErrorParameterSet'.
DEBUG: 5:53:21 PM - using account id '[email protected]'...
WARNING: Upcoming breaking changes in the cmdlet 'Resolve-AzError' :
The `Resolve-Error` alias will be removed in a future release.  Please change any scripts that use this alias to use `Resolve-AzError` instead.
Note : Go to https://aka.ms/azps-changewarnings for steps to suppress this breaking change warning, and other information on breaking changes in Azure PowerShell.

   HistoryId: 2

Message        : Object reference not set to an instance of an object.
StackTrace     :    at Microsoft.Azure.Internal.Common.AzureRestOperations.BeginHttpMessagesAsync[T](HttpMethod method, String path, IDictionary`2 queries, String fragment, Object content, IDictionary`2 customHeaders, CancellationToken cancellationToken)
                    at Microsoft.Azure.Internal.Common.AzureRestOperations.BeginHttpGetMessagesAsync[T](String resourceUri, String apiVersion, IDictionary`2 customHeaders, CancellationToken cancellationToken)
                    at Microsoft.Azure.Internal.Common.AzureRestOperations.GetResource[T](String resourceId, String apiVersion, IDictionary`2 customHeaders, CancellationToken cancellationToken)
                    at Microsoft.Azure.Commands.Network.PrivateLinkService.PrivateLinkServiceProvider.GenericProvider.GetPrivateEndpointConnection(String resourceGroupName, String serviceName, String name)
                    at Microsoft.Azure.Commands.Network.GetAzurePrivateEndpointConnection.Execute()
                    at Microsoft.Azure.Commands.Network.NetworkBaseCmdlet.ExecuteCmdlet()
                    at Microsoft.WindowsAzure.Commands.Utilities.Common.CmdletExtensions.<>c__3`1.<ExecuteSynchronouslyOrAsJob>b__3_0(T c)
                    at Microsoft.WindowsAzure.Commands.Utilities.Common.CmdletExtensions.ExecuteSynchronouslyOrAsJob[T](T cmdlet, Action`1 executor)
                    at Microsoft.WindowsAzure.Commands.Utilities.Common.CmdletExtensions.ExecuteSynchronouslyOrAsJob[T](T cmdlet)
                    at Microsoft.WindowsAzure.Commands.Utilities.Common.AzurePSCmdlet.ProcessRecord()
Exception      : System.NullReferenceException
InvocationInfo : {Get-AzPrivateEndpointConnection}
Line           :  Get-AzPrivateEndpointConnection -ResourceId "/subscriptions/9e223dbe-3399-4e19-88eb-0975f02ac87f/resourceGroups/pl-rg-test/providers/Microsoft.Web/sites/webapp20220424/privateEndpointConnections/lucasprivateendpoint-2dd7aaea-da5d-458a-93b2-f265092efc8a"
Position       : At line:1 char:2
                 +  Get-AzPrivateEndpointConnection -ResourceId "/subscriptions/9e223dbe …
                 +  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
HistoryId      : 2


The Azure PowerShell team is listening, please let us know how we are doing: https://aka.ms/azpssurvey?Q_CHL=ERROR.

DEBUG: AzureQoSEvent: Module: Az.Accounts:2.7.4; CommandName: Resolve-AzError; PSVersion: 7.1.4; IsSuccess: True; Duration: 00:00:00.0663893
DEBUG: Finish sending metric.
DEBUG: 5:53:23 PM - ResolveError end processing.

[dingmeng-xue]

@VeryEarly , this error comes from GeneralRestClient in common lib. please check the root cause.

[VeryEarly]

should be fixed by: Azure/azure-powershell-common#345