VS2026 gives error bar "Razor SematicTokens Feature" is currently unavailable due to an internal error

[AdmiralSnyder]

Here's the stacktrace:
StreamJsonRpc.RemoteInvocationException: The requested line number 902 must be less than the number of lines 901. (Parameter 'Line')
at StreamJsonRpc.JsonRpc.d__1711.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 System.Threading.Tasks.ValueTask1.get_Result()
at Microsoft.CodeAnalysis.Remote.BrokeredServiceConnection1.<TryInvokeAsync>d__181.MoveNext()
RPC server exception:
System.ArgumentOutOfRangeException: The requested line number 902 must be less than the number of lines 901. (Parameter 'Line')
at Microsoft.CodeAnalysis.Remote.Razor.ThrowingErrorLoggerProvider.Logger.Log(LogLevel logLevel, String message, Exception exception)
at Microsoft.CodeAnalysis.Razor.Logging.AbstractLoggerFactory.AggregateLogger.Log(LogLevel logLevel, String message, Exception exception)
at Microsoft.CodeAnalysis.Razor.Logging.ILoggerExtensions.LogError(ILogger logger, Exception exception, String message)
at Microsoft.CodeAnalysis.Razor.SemanticTokens.AbstractRazorSemanticTokensInfoService.GetSemanticTokensAsync(DocumentContext documentContext, LinePositionSpan span, Guid correlationId, Boolean colorBackground, CancellationToken cancellationToken)
at Microsoft.CodeAnalysis.Razor.SemanticTokens.AbstractRazorSemanticTokensInfoService.GetSemanticTokensAsync(DocumentContext documentContext, LinePositionSpan span, Boolean colorBackground, Guid correlationId, CancellationToken cancellationToken)
at Microsoft.CodeAnalysis.Remote.Razor.RemoteSemanticTokensService.GetSemanticTokensDataAsync(RemoteDocumentContext context, LinePositionSpan span, Boolean colorBackground, Guid correlationId, CancellationToken cancellationToken)
at Microsoft.CodeAnalysis.Remote.RemoteWorkspace.<>c__DisplayClass7_01.<<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, Func2 implementation, CancellationToken cancellationToken)
at Microsoft.CodeAnalysis.Remote.RemoteWorkspace.RunWithSolutionAsync[T](AssetProvider assetProvider, Checksum solutionChecksum, Boolean updatePrimaryBranch, Func2 implementation, CancellationToken cancellationToken) at Microsoft.CodeAnalysis.Remote.RemoteWorkspaceManager.RunServiceAsync[T](ServiceBrokerClient client, Checksum solutionChecksum, Func2 implementation, CancellationToken cancellationToken)

@davidwengier maybe consider outputting the timestamp of the error and the filename it happened in, too - i could give you the .razor file then, maybe...

[davidwengier]

@AdmiralSnyder if you report the issue through VS Feedback and include a recording, we'll get dumps and traces that hopefully will tell us all the info we need.