StreamJsonRpc.RemoteInvocationException: Syntax node is not within syntax tree
   at StreamJsonRpc.JsonRpc.<InvokeCoreAsync>d__171`1.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 Microsoft.CodeAnalysis.Remote.BrokeredServiceConnection`1.<TryInvokeAsync>d__20`1.MoveNext()
RPC server exception:
System.ArgumentException: Syntax node is not within syntax tree
      at Microsoft.CodeAnalysis.CSharp.CSharpSemanticModel.CheckSyntaxNode(CSharpSyntaxNode syntax)
      at Microsoft.CodeAnalysis.CSharp.CSharpSemanticModel.GetSymbolInfo(ExpressionSyntax expression, CancellationToken cancellationToken)
      at Microsoft.AspNetCore.Analyzers.RouteEmbeddedLanguage.RoutePatternHighlighter.<>c__DisplayClass2_0.<HighlightSymbol>b__1(IdentifierNameSyntax i)
      at System.Linq.Enumerable.WhereEnumerableIterator`1.MoveNext()
      at Microsoft.AspNetCore.Analyzers.RouteEmbeddedLanguage.RoutePatternHighlighter.HighlightSymbol(SemanticModel semanticModel, IMethodSymbol methodSymbol, IList`1 highlightSpans, ISymbol matchingParameter, CancellationToken cancellationToken)
      at Microsoft.AspNetCore.Analyzers.RouteEmbeddedLanguage.RoutePatternHighlighter.GetHighlights(RouteUsageModel routeUsage, SemanticModel semanticModel, Int32 position, CancellationToken cancellationToken)
      at Microsoft.AspNetCore.Analyzers.RouteEmbeddedLanguage.RoutePatternHighlighter.GetDocumentHighlights(SemanticModel semanticModel, SyntaxToken token, Int32 position, CancellationToken cancellationToken)
      at Microsoft.CodeAnalysis.ExternalAccess.AspNetCore.Internal.EmbeddedLanguages.AspNetCoreEmbeddedLanguageDocumentHighlighter.GetDocumentHighlights(Document document, SemanticModel semanticModel, SyntaxToken token, Int32 position, HighlightingOptions options, CancellationToken cancellationToken)
      at Microsoft.CodeAnalysis.DocumentHighlighting.AbstractDocumentHighlightsService.TryGetEmbeddedLanguageHighlights(Document document, SemanticModel semanticModel, Int32 position, HighlightingOptions options, CancellationToken cancellationToken)
      at Microsoft.CodeAnalysis.DocumentHighlighting.AbstractDocumentHighlightsService.GetDocumentHighlightsInCurrentProcessAsync(Document document, Int32 position, IImmutableSet`1 documentsToSearch, HighlightingOptions options, CancellationToken cancellationToken)
      at Microsoft.CodeAnalysis.DocumentHighlighting.AbstractDocumentHighlightsService.GetDocumentHighlightsAsync(Document document, Int32 position, IImmutableSet`1 documentsToSearch, HighlightingOptions options, CancellationToken cancellationToken)
      at Microsoft.CodeAnalysis.Remote.RemoteDocumentHighlightsService.<>c__DisplayClass2_0.<<GetDocumentHighlightsAsync>b__0>d.MoveNext()
   --- End of stack trace from previous location ---
      at Microsoft.CodeAnalysis.Remote.RemoteWorkspace.<>c__DisplayClass7_0`1.<<RunWithSolutionAsync>g__ProcessSolutionAsync|1>d.MoveNext()
   --- End of stack trace from previous location ---
      at Microsoft.CodeAnalysis.Remote.RemoteWorkspace.RunWithSolutionAsync[T](AssetProvider assetProvider, Checksum solutionChecksum, Boolean updatePrimaryBranch, Func`2 implementation, CancellationToken cancellationToken)
      at Microsoft.CodeAnalysis.Remote.RemoteWorkspace.RunWithSolutionAsync[T](AssetProvider assetProvider, Checksum solutionChecksum, Boolean updatePrimaryBranch, Func`2 implementation, CancellationToken cancellationToken)
      at Microsoft.CodeAnalysis.Remote.BrokeredServiceBase.RunWithSolutionAsync[T](Checksum solutionChecksum, Func`2 implementation, CancellationToken cancellationToken)
      at Microsoft.CodeAnalysis.Remote.BrokeredServiceBase.RunServiceImplAsync[T](Func`2 implementation, CancellationToken cancellationToken)