出错页面是：https://edu.netdig.cn/plus/chart.ashx?text=https://edu.netdig.cn/course/133.html
异常信息：未能创建类型“Kesion.WebSite.Plus.chart”。
Source:System.Web
StackTrace:

   在 System.Web.UI.SimpleWebHandlerParser.GetType(String typeName)
   在 System.Web.UI.SimpleWebHandlerParser.GetTypeToCache(Assembly builtAssembly)
   在 System.Web.Compilation.SimpleHandlerBuildProvider.GetGeneratedType(CompilerResults results)
   在 System.Web.Compilation.BuildProvider.CreateBuildResult(CompilerResults results)
   在 System.Web.Compilation.BuildProvider.GetBuildResult(CompilerResults results)
   在 System.Web.Compilation.BuildManager.CompileWebFile(VirtualPath virtualPath)
   在 System.Web.Compilation.BuildManager.GetVPathBuildResultInternal(VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile, Boolean throwIfNotFound, Boolean ensureIsUpToDate)
   在 System.Web.Compilation.BuildManager.GetVPathBuildResultWithNoAssert(HttpContext context, VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile, Boolean throwIfNotFound, Boolean ensureIsUpToDate)
   在 System.Web.Compilation.BuildManager.GetVPathBuildResult(HttpContext context, VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile, Boolean ensureIsUpToDate)
   在 System.Web.UI.SimpleHandlerFactory.System.Web.IHttpHandlerFactory2.GetHandler(HttpContext context, String requestType, VirtualPath virtualPath, String physicalPath)
   在 System.Web.HttpApplication.MaterializeHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   在 System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step)
   在 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

InnerException: