IRequestExceptionHandler from other project not loaded

[dmCsharp]

Hi, I Ihave a core class library project, where i locate global exception handler and other base classes

 public class GlobalRequestExceptionHandler<TRequest, TResponse, TException>
  : IRequestExceptionHandler<TRequest, TResponse, TException>
     where TRequest : BaseRequest<TResponse>
     where TResponse : BaseResponse
     where TException : Exception
  {
      private readonly ILogger<GlobalRequestExceptionHandler<TRequest, TResponse, TException>> _logger;

      public GlobalRequestExceptionHandler(
         ILogger<GlobalRequestExceptionHandler<TRequest, TResponse, TException>> logger)
      {
          _logger = logger;
      }

      public Task Handle(TRequest request, TException exception, RequestExceptionHandlerState<TResponse> state,
          CancellationToken cancellationToken)
      {
          _logger.LogError(exception, "Break here {@requestType}", typeof(TRequest));

          throw new Exception("Exception");
      }
  }

   public class BaseRequest<TResponse> : IRequest<TResponse> where TResponse : BaseResponse { }

   public class BaseResponse
   {
       public bool HasError { get; set; }
       public string Message { get; set; } = null!;
   }

In another console project i set reference to this class library and a specific request and commands

 public class FileUploadRequest : BaseRequest<FileUploadResponse>
 {
    public string FileName { get; set; }
 }

 public class FileUploadResponse : BaseResponse { }

 public class FileUploadRequestHandler : IRequestHandler<FileUploadRequest, FileUploadResponse>
 {
    public Task<FileUploadResponse> Handle(FileUploadRequest request, CancellationToken cancellationToken)
    {
        throw new InvalidOperationException("My exception");
    }
 }

Make a registration in Program.cs of console app and make a request to IMediatr

var serviceCollection = new ServiceCollection();

serviceCollection.AddTransient(typeof(IRequestExceptionHandler<,,>), typeof(GlobalRequestExceptionHandler<,,>));

serviceCollection.AddMediatR(cfg =>
{
    cfg.RegisterServicesFromAssembly(Assembly.GetExecutingAssembly());
});

var serilogLogger = new LoggerConfiguration()
         .WriteTo.Console()
         .CreateLogger();

serviceCollection.AddLogging(builder =>
{
    builder.AddSerilog(logger: serilogLogger, dispose: true);
});

var serviceProvider = serviceCollection.BuildServiceProvider();

var services = serviceCollection;

var mediator = serviceProvider.GetRequiredService<IMediator>();

var result = await mediator.Send(new FileUploadRequest()
{
    FileName = "FileName"
});

Console.ReadLine();

Expected: exception hit the Handle method of GlobalRequestExceptionHandler Actual: Handle method of GlobalRequestExceptionHandler skipped