[NullReferenceException: Object reference not set to an instance of an object.]
System.Data.Objects.ELinq.QueryParameterExpression.EvaluateParameter(Object[] arguments) +423
System.Data.Objects.ELinq.ELinqQueryState.GetExecutionPlan(Nullable`1 forMergeOption) +1514
System.Data.Objects.ObjectQuery`1.GetResults(Nullable`1 forMergeOption) +212
System.Data.Objects.ObjectQuery`1.System.Collections.Generic.IEnumerable<T>.GetEnumerator() +40
System.Linq.Enumerable.SingleOrDefault(IEnumerable`1 source) +182
eCommerce.Controllers.CatalogoController.SubCategoryProducts(String categoryName, String subcategoryName) +1301
lambda_method(Closure , ControllerBase , Object[] ) +194
System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) +280
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +35
System.Web.Mvc.<>c__DisplayClass15.<InvokeActionMethodWithFilters>b__12() +80
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) +454
System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +658
System.Web.Mvc.Controller.ExecuteCore() +143
System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +91
System.Web.Mvc.<>c__DisplayClassb.<BeginProcessRequest>b__5() +57
System.Web.Mvc.Async.<>c__DisplayClass1.<MakeVoidDelegate>b__0() +25
System.Web.Mvc.<>c__DisplayClasse.<EndProcessRequest>b__d() +36
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +602
System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +195
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +128
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