{"type":3,"errorcode":0,"message":"未将对象引用设置到对象的实例。 在 Tunynet.Spacebuilder.ExerciseController.ShowChapterExam(String sectionId, String itemCode, String index, Boolean viewAnswer, String view) 位置 E:\\solution\\spy.xje.com.cn20231226\\Spacebuilder\\Controllers\\ExerciseController.cs:行号 626\r\n 在 lambda_method(Closure , ControllerBase , Object[] )\r\n 在 System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters)\r\n 在 System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters)\r\n 在 System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters)\r\n 在 System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c.b__9_0(IAsyncResult asyncResult, ActionInvocation innerInvokeState)\r\n 在 System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`2.CallEndDelegate(IAsyncResult asyncResult)\r\n 在 System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.End()\r\n 在 System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult)\r\n 在 System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.<>c__DisplayClass11_0.b__0()\r\n 在 System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass7_0.b__1(IAsyncResult asyncResult)\r\n 在 System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`1.CallEndDelegate(IAsyncResult asyncResult)\r\n 在 System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.End()\r\n 在 System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters(IAsyncResult asyncResult)\r\n 在 System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass3_6.b__4()\r\n 在 System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass3_1.b__1(IAsyncResult asyncResult)","resultdata":null}