出错页面是:https://www.lobn.com.cn/index.aspx?c=course&a=list&en=ziliaoyuan&sp=teachway-5,o-2d,o-2d,p-1,isfree-2,promotion-0
异常信息:引发类型为“System.Web.HttpUnhandledException”的异常。
Source:System.Web
StackTrace:
   在 System.Web.UI.Page.HandleError(Exception e)
   在 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
   在 System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
   在 System.Web.UI.Page.ProcessRequest()
   在 System.Web.UI.Page.ProcessRequest(HttpContext context)
   在 ASP.index_aspx.ProcessRequest(HttpContext context)
   在 System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   在 System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step)
   在 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

InnerException:
System.Reflection.TargetInvocationException: 调用的目标发生了异常。 ---> System.ArgumentException: 已添加了具有相同键的项。
   在 System.ThrowHelper.ThrowArgumentException(ExceptionResource resource)
   在 System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add)
   在 Kesion.HtmlTags.PageCache.CacheFileChk(String dir, String& cacheFile, String templateName, Boolean isSchool)
   在 Kesion.Controllers.courseController.DoSearch(Int32 teachWay, Boolean isMobileDevice, Boolean isSchool, DataRow drEp)
   在 Kesion.Controllers.courseController.List(Int32 teachWay, Boolean isMobileDevice, Boolean isSchool, DataRow drEp)
   在 Kesion.Controllers.courseController.doRun(String a, Boolean isMobileDevice, Boolean isSchool, DataRow drEp)
   在 Kesion.Controllers.courseController.Run(Boolean isMobileDevice)
   --- 内部异常堆栈跟踪的结尾 ---
   在 System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
   在 System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)
   在 System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   在 Kesion.NET.WebSite.Index.Page_Load(Object sender, EventArgs e)
   在 System.Web.UI.Control.OnLoad(EventArgs e)
   在 System.Web.UI.Control.LoadRecursive()
   在 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)