[NullReferenceException: 개체 참조가 개체의 인스턴스로 설정되지 않았습니다.]
NPTech.LMS.Core.Controllers.BaseController.FileDownLoad(String id) +191
lambda_method(Closure , ControllerBase , Object[] ) +107
System.Web.Mvc.<>c__DisplayClass1.<WrapVoidAction>b__0(ControllerBase controller, Object[] parameters) +19
System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters) +19
System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) +203
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +27
System.Web.Mvc.<>c__DisplayClass15.<InvokeActionMethodWithFilters>b__12() +56
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) +275
System.Web.Mvc.<>c__DisplayClass17.<InvokeActionMethodWithFilters>b__14() +26
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodWithFilters(ControllerContext controllerContext, IList`1 filters, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +202
System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +346
System.Web.Mvc.Controller.ExecuteCore() +90
System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +88
System.Web.Mvc.ControllerBase.System.Web.Mvc.IController.Execute(RequestContext requestContext) +12
System.Web.Mvc.<>c__DisplayClassb.<BeginProcessRequest>b__5() +41
System.Web.Mvc.Async.<>c__DisplayClass1.<MakeVoidDelegate>b__0() +16
System.Web.Mvc.Async.<>c__DisplayClass8`1.<BeginSynchronous>b__7(IAsyncResult _) +15
System.Web.Mvc.Async.WrappedAsyncResult`1.End() +49
System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +20
System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +10
System.Web.Mvc.<>c__DisplayClasse.<EndProcessRequest>b__d() +19
System.Web.Mvc.SecurityUtil.<GetCallInAppTrustThunk>b__0(Action f) +12
System.Web.Mvc.SecurityUtil.ProcessInApplicationTrust(Action action) +24
System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +68
System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +11
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +878
System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +149
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +148
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