Sonar cloud scanner error: System.NullReferenceException

SonarCloud
1

Azure DevOps

  • Scanner command used when applicable (private details masked)
    Sonar Cloud Analyzer Azure Devops Step
  • Languages of the repository
    dotnet framework
  • Only if the SonarCloud project is public, the URL
    • And if you need help with pull request decoration, then the URL to the PR too
  • Error observed (wrap logs/code around with triple quotes ``` for proper formatting)
13:37:05.566  Processing plugin: csharp version 9.23.2.88755
##[debug]Processed: ##vso[task.logissue type=error;]

##[error]Unhandled Exception:
##[debug]Processed: ##vso[task.logissue type=error;]Unhandled Exception:
##[error]System.NullReferenceException: Object reference not set to an instance of an object.
   at SonarScanner.MSBuild.PreProcessor.Roslyn.SubdirIndex.GetOrCreatePath(String key)
   at SonarScanner.MSBuild.PreProcessor.Roslyn.EmbeddedAnalyzerInstaller.GetPluginResourceFiles(Plugin plugin)
   at SonarScanner.MSBuild.PreProcessor.Roslyn.EmbeddedAnalyzerInstaller.InstallAssemblies(IEnumerable`1 plugins)
   at SonarScanner.MSBuild.PreProcessor.Roslyn.RoslynAnalyzerProvider.FetchAnalyzerPlugins(String language, IEnumerable`1 activeRules)
   at SonarScanner.MSBuild.PreProcessor.Roslyn.RoslynAnalyzerProvider.SetupAnalyzer(BuildSettings teamBuildSettings, IAnalysisPropertyProvider sonarProperties, IEnumerable`1 rules, String language)
   at SonarScanner.MSBuild.PreProcessor.PreProcessor.<FetchArgumentsAndRuleSets>d__9.MoveNext()
--- 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 SonarScanner.MSBuild.PreProcessor.PreProcessor.<DoExecute>d__7.MoveNext()
--- 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 SonarScanner.MSBuild.PreProcessor.PreProcessor.<Execute>d__6.MoveNext()
--- 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 SonarScanner.MSBuild.BootstrapperClass.<PreProcess>d__10.MoveNext()
--- 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 SonarScanner.MSBuild.BootstrapperClass.<Execute>d__8.MoveNext()
--- 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 SonarScanner.MSBuild.Program.<Execute>d__4.MoveNext()
--- 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 SonarScanner.MSBuild.Program.<Execute>d__3.MoveNext()
--- 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 SonarScanner.MSBuild.Program.<Main>d__2.MoveNext()
--- End of stack trace from previous location where exception was thrown ---

   at SonarScanner.MSBuild.PreProcessor.Roslyn.EmbeddedAnalyzerInstaller.GetPluginResourceFiles(Plugin plugin)
   at SonarScanner.MSBuild.PreProcessor.Roslyn.EmbeddedAnalyzerInstaller.InstallAssemblies(IEnumerable`1 plugins)
   at SonarScanner.MSBuild.PreProcessor.Roslyn.RoslynAnalyzerProvider.FetchAnalyzerPlugins(String language, IEnumerable`1 activeRules)
   at SonarScanner.MSBuild.PreProcessor.Roslyn.RoslynAnalyzerProvider.SetupAnalyzer(BuildSettings teamBuildSettings, IAnalysisPropertyProvider sonarProperties, IEnumerable`1 rules, String language)
   at SonarScanner.MSBuild.PreProcessor.PreProcessor.<FetchArgumentsAndRuleSets>d__9.MoveNext()
--- 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 SonarScanner.MSBuild.PreProcessor.PreProcessor.<DoExecute>d__7.MoveNext()
--- 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 SonarScanner.MSBuild.PreProcessor.PreProcessor.<Execute>d__6.MoveNext()
--- 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 SonarScanner.MSBuild.BootstrapperClass.<PreProcess>d__10.MoveNext()
--- 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 SonarScanner.MSBuild.BootstrapperClass.<Execute>d__8.MoveNext()
--- 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 SonarScanner.MSBuild.Program.<Execute>d__4.MoveNext()
--- 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 SonarScanner.MSBuild.Program.<Execute>d__3.MoveNext()
--- 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 SonarScanner.MSBuild.Program.<Main>d__2.MoveNext()
--- 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 SonarScanner.MSBuild.Program.<Main>(String[] args)
##[debug]Exit code 3762504530 received from tool 'D:\agents\***-dev-develop-pr\_work\_tasks\SonarCloudPrepare_14d9cde6-c1da-4d55-aa01-2965cd301255\1.41.0\classic-sonar-scanner-msbuild\SonarScanner.MSBuild.exe'
##[debug]STDIO streams have closed for tool 'D:\agents\***-dev-develop-pr\_work\_tasks\SonarCloudPrepare_14d9cde6-c1da-4d55-aa01-2965cd301255\1.41.0\classic-sonar-scanner-msbuild\SonarScanner.MSBuild.exe'
  • Steps to reproduce
    Error in Prepare analysis on SonarCloud steps of zure devops pipeline
  • Potential workaround
    None found, sometimes restarting helps randomly
    Do not share screenshots of logs – share the text itself (bonus points for being well-formatted)!
4

Hello @Tom_Wilson,

Apologies for the late reply.

  • what are the commands you are running to do the analysis? Can you share the YAML file or relevant steps that is orchestrating the DevOps CI?
  • are you using VMs provided by Microsoft or your own images?

Could you please share the verbose logs with us?

Here’s how to enable the verbose logs:

Share the Scanner for .NET verbose logs

  • Add /d:"sonar.verbose=true" to the “SonarQubePrepare” or “SonarCloudPrepare” task’s extraProperties argument when using Azure DevOps
    • For example:
      - task: SonarCloudPrepare@1
    inputs:
      SonarCloud: 'sonarcloud'
      organization: 'foo'
      scannerMode: 'MSBuild'
      projectKey: 'foo_sonar-scanning-someconsoleapp'
      projectName: 'sonar-scanning-someconsoleapp'
      extraProperties: |
        sonar.verbose=true

Thanks a lot!
Best Regards
Mary