Error: No registration for type IQueryHandler<EnrollmentDateQuery, List<EnrollmentDateGroup>> could be found.

Bootstrapper

    container.RegisterSingle<IQueryProcessor, DynamicQueryProcessor>();
    container.RegisterManyForOpenGeneric(typeof(IQueryHandler<,>), Assembly.GetExecutingAssembly());

Code

    public class HomeController : Controller
    {
        private readonly IQueryProcessor _queryProcessor;

        public HomeController(IQueryProcessor queryProcessor)
        {
            _queryProcessor = queryProcessor;
        }

        public ActionResult Index()
        {
            return View();
        }

        public ActionResult About()
        {
            var result = _queryProcessor.Process(new EnrollmentDateQuery());

            return View(result);
        }
    }
        
    public class EnrollmentDateQuery : IQuery<List<EnrollmentDateGroup>>
    {

    }

    public class EnrollmentDateGroup
    {
        public DateTime EnrollmentDate { get; set; }
        public int Students { get; set; }
    }

    public class EnrollmentDateQueryHandler : IQueryHandler<EnrollmentDateQuery, List<EnrollmentDateGroup>>
    {
        private readonly SchoolContext _schoolContext;

        public EnrollmentDateQueryHandler(SchoolContext schoolContext)
        {
            _schoolContext = schoolContext;
        }

        public List<EnrollmentDateGroup> Handle(EnrollmentDateQuery query)
        {
            return _schoolContext.Students.GroupBy(x => x.EnrollmentDate).Select(x => new EnrollmentDateGroup
            {
                EnrollmentDate = x.Key,
                Students = x.Count()
            }).ToList();
        }
    }

DynamicQueryProcessor

    public class DynamicQueryProcessor : IQueryProcessor
    {
        private readonly Container _container;

        public DynamicQueryProcessor(Container container)
        {
            _container = container;
        }

        [DebuggerStepThrough]
        public TResult Process<TResult>(IQuery<TResult> query)
        {
            var handlerType = typeof(IQueryHandler<,>)
                .MakeGenericType(query.GetType(), typeof(TResult));

            dynamic handler = _container.GetInstance(handlerType);

            return handler.Handle((dynamic)query);
        }
    }