[Bug]: System.ArgumentNullException: Value cannot be null. Parameter name: uriString

[ser789654]

Version

• I confirm that I am using the latest version

Source Version

Azure DevOps Service

Target Version

Azure DevOps Service

Relevant configuration

{
  "Serilog": {
    "MinimumLevel": "Information"
  },
  "MigrationTools": {
    "Version": "16.0",
    "Endpoints": {
      "Source": {
        "EndpointType": "AzureDevOpsEndpoint",
        "Collection": "https://dev.azure.com/app0/",
        "Project": "MobileApp",
        "Authentication": {
          "AuthenticationMode": "AccessToken",
          "AccessToken": "**************"
        },
        "ReflectedWorkItemIdField": "Custom.ReflectedWorkItemId",
        "LanguageMaps": {
          "AreaPath": "Area",
          "IterationPath": "Iteration"
        }
      },
      "Target": {
        "EndpointType": "AzureDevOpsEndpoint",
        "Collection": "https://dev.azure.com/app/",
        "Project": "MobileApp",
        "Authentication": {
          "AuthenticationMode": "AccessToken",
          "AccessToken": "*******************"
        },
        "ReflectedWorkItemIdField": "Custom.ReflectedWorkItemId",
        "LanguageMaps": {
          "AreaPath": "Area",
          "IterationPath": "Iteration"
        }
      }
    },
    "Processors": [
      {
        "ProcessorType": "AzureDevOpsPipelineProcessor",
        "Enabled": true,
        "MigrateBuildPipelines": true,
        "MigrateReleasePipelines": true,
        "MigrateServiceConnections": true,
        "MigrateTaskGroups": true,
        "MigrateVariableGroups": true,
        "SourceName": "Source",
        "TargetName": "Target"
      }
    ],
    "CommonTools": {
      "TfsRevisionManagerTool": {
        "Enabled": true,
        "MaxRevisions": 100,
        "ReplayRevisions": true
      }      
    }
  }
}

Relevant log output

15:23:11 FTL] [16.0.9] Error while running AzureDevOpsPipelineProcessor
System.ArgumentNullException: Value cannot be null.
Parameter name: uriString
   at System.Uri..ctor(String uriString, UriKind uriKind)
   at System.UriBuilder..ctor(String uri)
   at MigrationTools.Endpoints.AzureDevOpsEndpoint.GetUriBuilderBasedOnEndpointAndType[DefinitionType](String[] routeParameters) in D:\a\azure-devops-migration-tools\azure-devops-migration-tools\src\MigrationTools.Clients.AzureDevops.Rest\Endpoints\AzureDevOpsEndpoint.cs:line 102
   at MigrationTools.Endpoints.AzureDevOpsEndpoint.GetHttpClient[DefinitionType](String[] routeParams) in D:\a\azure-devops-migration-tools\azure-devops-migration-tools\src\MigrationTools.Clients.AzureDevops.Rest\Endpoints\AzureDevOpsEndpoint.cs:line 57
   at MigrationTools.Endpoints.AzureDevOpsEndpoint.<GetApiDefinitionsAsync>d81.MoveNext() in D:\a\azure-devops-migration-tools\azure-devops-migration-tools\src\MigrationTools.Clients.AzureDevops.Rest\Endpoints\AzureDevOpsEndpoint.cs:line 161
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter1.GetResult()
   at MigrationTools.Processors.AzureDevOpsPipelineProcessor.<CreateServiceConnectionsAsync>d27.MoveNext() in D:\a\azure-devops-migration-tools\azure-devops-migration-tools\src\MigrationTools.Clients.AzureDevops.Rest\Processors\AzureDevOpsPipelineProcessor.cs:line 611
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
   at MigrationTools.Processors.AzureDevOpsPipelineProcessor.<MigratePipelinesAsync>d__9.MoveNext() in D:\a\azure-devops-migration-tools\azure-devops-migration-tools\src\MigrationTools.Clients.AzureDevops.Rest\Processors\AzureDevOpsPipelineProcessor.cs:line 74
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
   at MigrationTools.Processors.AzureDevOpsPipelineProcessor.InternalExecute() in D:\a\azure-devops-migration-tools\azure-devops-migration-tools\src\MigrationTools.Clients.AzureDevops.Rest\Processors\AzureDevOpsPipelineProcessor.cs:line 40
   at MigrationTools.Processors.Infrastructure.Processor.Execute() in D:\a\azure-devops-migration-tools\azure-devops-migration-tools\src\MigrationTools\Processors\Infrastructure\Processor.cs:line 99
Error logged to Elmah.io!
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What happened?

When I try to run pipelines migration I get error System.ArgumentNullException: Value cannot be null. Parameter name: uriString

Debug in Visual Studio

• Visual Studio Debug

[Niharika-2799]

Hi, Even I'm facing the same issue when I'm using AzureDevOpsPipelineProcessor for migrating pipelines. Kindly help!!

{"Timestamp":"2025-03-04T12:31:15.5243482+05:30","Level":"Fatal","MessageTemplate":"Error while running {MigrationContextname}","TraceId":"40043dcb606d28e6bb100bffbc6cf99d","SpanId":"33bec3db5fc25d31","Exception":"System.ArgumentNullException: Value cannot be null.\r\nParameter name: uriString\r\n at System.Uri..ctor(String uriString, UriKind uriKind)\r\n at System.UriBuilder..ctor(String uri)\r\n at MigrationTools.Endpoints.AzureDevOpsEndpoint.GetUriBuilderBasedOnEndpointAndType[DefinitionType](String[] routeParameters) in D:\a\azure-devops-migration-tools\azure-devops-migration-tools\src\MigrationTools.Clients.AzureDevops.Rest\Endpoints\AzureDevOpsEndpoint.cs:line 102\r\n at MigrationTools.Endpoints.AzureDevOpsEndpoint.GetHttpClient[DefinitionType](String[] routeParams) in D:\a\azure-devops-migration-tools\azure-devops-migration-tools\src\MigrationTools.Clients.AzureDevops.Rest\Endpoints\AzureDevOpsEndpoint.cs:line 57\r\n at MigrationTools.Endpoints.AzureDevOpsEndpoint.d__81.MoveNext() in D:\\a\\azure-devops-migration-tools\\azure-devops-migration-tools\\src\\MigrationTools.Clients.AzureDevops.Rest\\Endpoints\\AzureDevOpsEndpoint.cs:line 161\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at System.Runtime.CompilerServices.TaskAwaiter1.GetResult()\r\n at MigrationTools.Processors.AzureDevOpsPipelineProcessor.d__27.MoveNext() in D:\a\azure-devops-migration-tools\azure-devops-migration-tools\src\MigrationTools.Clients.AzureDevops.Rest\Processors\AzureDevOpsPipelineProcessor.cs:line 611\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()\r\n at MigrationTools.Processors.AzureDevOpsPipelineProcessor.d__9.MoveNext() in D:\a\azure-devops-migration-tools\azure-devops-migration-tools\src\MigrationTools.Clients.AzureDevops.Rest\Processors\AzureDevOpsPipelineProcessor.cs:line 74\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at System.Runtime.CompilerServices.TaskAwaiter.GetResult()\r\n at MigrationTools.Processors.AzureDevOpsPipelineProcessor.InternalExecute() in D:\a\azure-devops-migration-tools\azure-devops-migration-tools\src\MigrationTools.Clients.AzureDevops.Rest\Processors\AzureDevOpsPipelineProcessor.cs:line 40\r\n at MigrationTools.Processors.Infrastructure.Processor.Execute() in D:\a\azure-devops-migration-tools\azure-devops-migration-tools\src\MigrationTools\Processors\Infrastructure\Processor.cs:line 99","Properties":{"MigrationContextname":"AzureDevOpsPipelineProcessor","SourceContext":"MigrationTools.Processors.Infrastructure.Processor","versionString":"16.0.9","ProcessId":14852}}
{"Timestamp":"2025-03-04T12:31:17.5126698+05:30","Level":"Error","MessageTemplate":"{Context} The Processor {ProcessorName} entered the failed state...stopping run","TraceId":"40043dcb606d28e6bb100bffbc6cf99d","SpanId":"33e7129406957ff1","Properties":{"Context":"AzureDevOpsPipelineProcessor","ProcessorName":"MigrationEngine","SourceContext":"MigrationTools.MigrationEngine","versionString":"16.0.9","ProcessId":14852}}