Server Error in '/' Application.

Object reference not set to an instance of an object.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
   MCB.Sites.Mobile.Core.Factories.Education.GenericCourseInstanceList.GenericCourseInstanceListModelFactory.CreateContent(GenericCourseInstanceListSettingsModel settings, CourseFacetSearchSelectedOptions filter) in C:\teamcity\BuildAgent\work\f5a4e75b74205e4b\MCB.Sites.Mobile.Core\Factories\Education\GenericCourseInstanceList\GenericCourseInstanceListModelFactory.cs:69
   MCB.Sites.Mobile.Core.Factories.Education.GenericCourseInstanceList.GenericCourseInstanceListModelFactory.Create(GenericCourseInstanceListSettingsModel settings, CourseFacetSearchSelectedOptions filter) in C:\teamcity\BuildAgent\work\f5a4e75b74205e4b\MCB.Sites.Mobile.Core\Factories\Education\GenericCourseInstanceList\GenericCourseInstanceListModelFactory.cs:58
   MCB.Sites.Mobile.Core.Blocks.Builders.Education.Lists.LocalizedRelatedGenericCourseInstanceListBuilder.BuildPageBlockModel(Object loadedEntity, PageBlockEntity blockEntity, Int32 blockTypeVersion, ExecutionContext executionContext) in C:\teamcity\BuildAgent\work\f5a4e75b74205e4b\MCB.Sites.Mobile.Core\Blocks\Builders\Education\Lists\LocalizedRelatedGenericCourseInstanceListBuilder.cs:65
   MCB.Sites.Mobile.Core.Factories.PageSystem.PageBlockModelFactory.Create(Object entity, PageBlockEntity blockEntity, ExecutionContext executionContext) in C:\teamcity\BuildAgent\work\f5a4e75b74205e4b\MCB.Sites.Mobile.Core\Factories\PageSystem\PageBlockModelFactory.cs:40
   System.Linq.WhereSelectListIterator`2.MoveNext() +116
   System.Linq.WhereEnumerableIterator`1.MoveNext() +254
   System.Collections.Generic.List`1..ctor(IEnumerable`1 collection) +525
   System.Linq.Enumerable.ToList(IEnumerable`1 source) +68
   MCB.Sites.Mobile.Core.Services.PageSystemService.GetPageRegions(Object entity, PageLayoutEntity pageLayoutEntity, ExecutionContext executionContext) in C:\teamcity\BuildAgent\work\f5a4e75b74205e4b\MCB.Sites.Mobile.Core\Services\PageSystemService.cs:1071
   MCB.Sites.Mobile.Core.Services.PageSystemService.GetPageViewModel(Object entity, PageLayoutEntity pageLayoutEntity, ExecutionContext executionContext) in C:\teamcity\BuildAgent\work\f5a4e75b74205e4b\MCB.Sites.Mobile.Core\Services\PageSystemService.cs:557
   MCB.Sites.Mobile.Core.Services.PageSystemService.BuildPageViewModel(SiteArticlesEntity entity, ExecutionContext executionContext) in C:\teamcity\BuildAgent\work\f5a4e75b74205e4b\MCB.Sites.Mobile.Core\Services\PageSystemService.PageLayoutLoader.cs:168
   MCB.Sites.Mobile.Core.Services.PageSystemService.BuildPageViewModel(T entity, ExecutionContext executionContext) in C:\teamcity\BuildAgent\work\f5a4e75b74205e4b\MCB.Sites.Mobile.Core\Services\PageSystemService.cs:256
   MCB.Sites.Mobile.Core.Controllers.ArticleController.Show(Int32 id, String tripVoucher) in C:\teamcity\BuildAgent\work\f5a4e75b74205e4b\MCB.Sites.Mobile.Core\Controllers\ArticleController.cs:74
   lambda_method(Closure , ControllerBase , Object[] ) +194
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +34
   System.Web.Mvc.<>c__DisplayClass24_0.<InvokeActionMethodWithFilters>b__0() +79
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) +466
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) +466
   System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +971
   System.Web.Mvc.<>c__DisplayClass152_0.<BeginExecuteCore>b__2() +42
   System.Web.Mvc.Async.<>c.<.cctor>b__15_0(IAsyncResult asyncResult, Action action) +24
   System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +73
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +39
   System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +59
   System.Web.Mvc.<>c.<BeginProcessRequest>b__20_1(IAsyncResult asyncResult, ProcessRequestState innerState) +43
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +73
   System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +38
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +651
   System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +220
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +134


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4700.0