System.NullReferenceException: Object reference not set to an instance of an object. at Mavercloud.Bpg.Application.Services.BpgBlogService.d__13.MoveNext() in D:\MaverStation\WorkShop\BaiShiDeng\Wjgnet\BsdWebApp\Mavercloud.Bpg.Application\Services\BpgBlogService.cs:line 172 --- 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 BsdWeb.Utility.Services.ServiceHelper.d__10`1.MoveNext() in D:\MaverStation\WorkShop\BaiShiDeng\Wjgnet\BsdWebApp\BsdWeb.Utility\Services\ServiceHelper.cs:line 0 --- 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 BsdWeb.Utility.Services.BsdRestService.d__139.MoveNext() in D:\MaverStation\WorkShop\BaiShiDeng\Wjgnet\BsdWebApp\BsdWeb.Utility\Services\BsdRestService.cs:line 1713 --- 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.BpgController.d__31.MoveNext() in D:\MaverStation\WorkShop\BaiShiDeng\Wjgnet\BsdWebApp\BsdWebApp\Controllers\BpgController.cs:line 474 --- 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)