Ошибка

The parameters dictionary contains a null entry for parameter 'referencesTypeID' of non-nullable type 'System.Int64' for method 'System.Web.Mvc.ActionResult Health(Int64, System.String)' in 'LKP.Web.Controllers.HelpController'. An optional parameter must be a reference type, a nullable type, or be declared as an optional parameter. Имя параметра: parameters