2026.1.2 crashing in VS 2026 in .razor files?

I get a long stack of these errors … not sure of the trigger … all I tried to do was Ctrl + Shift + / (/* and */) to set a comment block (in my razor file  :

Show Stack Trace is below:

StreamJsonRpc.RemoteInvocationException: Razor source generator did not produce a host output for project 'Toms': warning CS8785: Generator 'RazorSourceGenerator' failed to generate source. It will not contribute to the output and compilation errors may occur as a result. Exception was of type 'ArgumentException' with message 'The hintName 'Components/Booking/BookingEquipmentCommodityEditView_razor.g.cs' of the added source file must be unique within a generator. (Parameter 'hintName')'.
System.ArgumentException: The hintName 'Components/Booking/BookingEquipmentCommodityEditView_razor.g.cs' of the added source file must be unique within a generator. (Parameter 'hintName')
  at Microsoft.CodeAnalysis.AdditionalSourcesCollection.Add(String hintName, SourceText source)
  at Microsoft.CodeAnalysis.SourceOutputNode`1.AppendOutputs(IncrementalExecutionContext context, CancellationToken cancellationToken)
-----

  at StreamJsonRpc.JsonRpc.<InvokeCoreAsync>d__177`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 System.Threading.Tasks.ValueTask`1.get_Result()
  at Microsoft.CodeAnalysis.Remote.BrokeredServiceConnection`1.<TryInvokeAsync>d__18`1.MoveNext()
RPC server exception:
System.InvalidOperationException: Razor source generator did not produce a host output for project 'Toms': warning CS8785: Generator 'RazorSourceGenerator' failed to generate source. It will not contribute to the output and compilation errors may occur as a result. Exception was of type 'ArgumentException' with message 'The hintName 'Components/Booking/BookingEquipmentCommodityEditView_razor.g.cs' of the added source file must be unique within a generator. (Parameter 'hintName')'.
System.ArgumentException: The hintName 'Components/Booking/BookingEquipmentCommodityEditView_razor.g.cs' of the added source file must be unique within a generator. (Parameter 'hintName')
  at Microsoft.CodeAnalysis.AdditionalSourcesCollection.Add(String hintName, SourceText source)
  at Microsoft.CodeAnalysis.SourceOutputNode`1.AppendOutputs(IncrementalExecutionContext context, CancellationToken cancellationToken)
-----

     at Microsoft.CodeAnalysis.Remote.Razor.ProjectSystem.GeneratorRunResult.CreateAsync(Boolean throwIfNotFound, Project project, RemoteSnapshotManager snapshotManager, CancellationToken cancellationToken)
     at Microsoft.CodeAnalysis.Remote.Razor.ProjectSystem.RemoteProjectSnapshot.GetRequiredCodeDocumentAsync(IDocumentSnapshot documentSnapshot, CancellationToken cancellationToken)
     at Microsoft.CodeAnalysis.Remote.Razor.ProjectSystem.RemoteDocumentSnapshot.GetGeneratedOutputAsync(CancellationToken cancellationToken)
     at Microsoft.CodeAnalysis.Razor.ProjectSystem.DocumentContext.<GetCodeDocumentAsync>g__GetCodeDocumentCoreAsync|19_0(CancellationToken cancellationToken)
     at Microsoft.CodeAnalysis.Remote.Razor.RemoteHoverService.GetHoverAsync(RemoteDocumentContext context, Position position, CancellationToken cancellationToken)
     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.RemoteWorkspaceManager.RunServiceAsync[T](ServiceBrokerClient client, Checksum solutionChecksum, Func`2 implementation, CancellationToken cancellationToken)