2021-04-13 12:56:07,517 [etg65][Thread:16][FATAL] DotNetNuke.Framework.PageBase - An error has occurred while loading page.
System.Web.HttpException (0x80004005): Server cannot append header after HTTP headers have been sent.
at System.Web.HttpResponse.AppendHeader(String name, String value)
at System.Web.HttpResponseWrapper.AddHeader(String name, String value)
at System.Web.Helpers.AntiXsrf.AntiForgeryWorker.GetFormInputElement(HttpContextBase httpContext)
at System.Web.Helpers.AntiForgery.GetHtml()
at DotNetNuke.Framework.ServicesFrameworkImpl.RegisterAjaxAntiForgery(Page page)
at DotNetNuke.Framework.PageBase.OnPreRender(EventArgs e)
at DotNetNuke.Framework.DefaultPage.OnPreRender(EventArgs evt)
at System.Web.UI.Control.<PreRenderRecursiveInternalAsync>d__249.MoveNext()
--- 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.Util.WithinCancellableCallbackTaskAwaitable.WithinCancellableCallbackTaskAwaiter.GetResult()
at System.Web.UI.Page.<ProcessRequestMainAsync>d__523.MoveNext()
2021-04-13 12:56:07,548 [etg65][Thread:16][TRACE] DotNetNuke.Web.Common.Internal.DotNetNukeHttpApplication - Dumping all Application Errors
2021-04-13 12:56:07,548 [etg65][Thread:16][FATAL] DotNetNuke.Web.Common.Internal.DotNetNukeHttpApplication - System.Web.HttpException (0x80004005): Error executing child request for /ErrorPage.aspx. ---> System.Web.HttpException (0x80004005): Server cannot set content type after HTTP headers have been sent.
at System.Web.HttpResponse.set_ContentType(String value)
at System.Web.UI.Page.SetIntrinsics(HttpContext context, Boolean allowAsync)
at System.Web.UI.Page.ProcessRequestWithNoAssert(HttpContext context)
at System.Web.UI.Page.ProcessRequest(HttpContext context)
at System.Web.HttpServerUtility.ExecuteInternal(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage, VirtualPath path, VirtualPath filePath, String physPath, Exception error, String queryStringOverride)
at System.Web.HttpServerUtility.ExecuteInternal(IHttpHandler handler, TextWriter writer, Boolean preserveForm, Boolean setPreviousPage, VirtualPath path, VirtualPath filePath, String physPath, Exception error, String queryStringOverride)
at System.Web.HttpServerUtility.Execute(String path, TextWriter writer, Boolean preserveForm)
at System.Web.HttpServerUtility.Transfer(String path, Boolean preserveForm)
at System.Web.HttpServerUtility.Transfer(String path)
at DotNetNuke.Framework.PageBase.OnError(EventArgs e)
at System.Web.UI.Page.HandleError(Exception e)
at System.Web.UI.Page.<ProcessRequestMainAsync>d__523.MoveNext()
--- 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.Util.WithinCancellableCallbackTaskAwaitable.WithinCancellableCallbackTaskAwaiter.GetResult()
at System.Web.UI.Page.<ProcessRequestAsync>d__515.MoveNext()
--- 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.UI.Page.<ProcessRequestAsync>d__554.MoveNext()
--- 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.TaskAsyncHelper.EndTask(IAsyncResult ar)
at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step)
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)