System.NullReferenceException: Object reference not set to an instance of an object. at BsdWeb.Utility.Services.BsdRestService.<>c__DisplayClass57_0.b__0(PubArticleModel t) in D:\MaverStation\WorkShop\BaiShiDeng\Wjgnet\BsdWebApp\BsdWeb.Utility\Services\BsdRestService.cs:line 872 at System.Linq.Enumerable.Any[TSource](IEnumerable`1 source, Func`2 predicate) at BsdWeb.Utility.Services.BsdRestService.d__57.MoveNext() in D:\MaverStation\WorkShop\BaiShiDeng\Wjgnet\BsdWebApp\BsdWeb.Utility\Services\BsdRestService.cs:line 872 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at BsdWebApp.Controllers.HomeController.d__9.MoveNext() in D:\MaverStation\WorkShop\BaiShiDeng\Wjgnet\BsdWebApp\BsdWebApp2\Controllers\HomeController.cs:line 265 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Mvc.Async.TaskAsyncActionDescriptor.EndExecute(IAsyncResult asyncResult) at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass8_0.b__1(IAsyncResult asyncResult) at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult) at System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.<>c__DisplayClass11_0.b__0() at System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.<>c__DisplayClass11_2.b__2() at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters(IAsyncResult asyncResult) at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass3_5.b__4() at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass3_0.b__1(IAsyncResult asyncResult)