Server Error in '/' Application.

Value cannot be null.
Parameter name: source

Description: An unhandled exception occurred.

Exception Details: System.ArgumentNullException: Value cannot be null.
Parameter name: source

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:


[ArgumentNullException: Value cannot be null.
Parameter name: source]
   System.Linq.Enumerable.Contains(IEnumerable`1 source, TSource value, IEqualityComparer`1 comparer) +352
   System.Linq.Enumerable.Contains(IEnumerable`1 source, TSource value) +114
   Feature.WilmerHaleLaunch.People.Controllers.PeopleController.BuildPeopleDetail() in E:\agent\_work\2\s\src\Feature\WilmerHaleLaunch\People\code\Feature.WilmerHaleLaunch.People\Controllers\PeopleController.cs:31
   lambda_method(Closure , ControllerBase , Object[] ) +87
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +35
   System.Web.Mvc.<>c__DisplayClass24_0.<InvokeActionMethodWithFilters>b__0() +80
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) +474
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) +474
   System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +2339


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4494.0