Server cannot append header after HTTP headers have been sent.

Server Error in '/' Application.

Server cannot append header after HTTP headers have been sent.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Web.HttpException: Server cannot append header after HTTP headers have been sent.

Source Error:



An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[HttpException (0x80004005): Server cannot append header after HTTP headers have been sent.]
   System.Web.HttpResponse.AppendHeader(String name, String value) +9773519
   System.Web.HttpResponseWrapper.AddHeader(String name, String value) +19
   System.Web.WebPages.WebPageHttpHandler.GenerateSourceFilesHeader(WebPageContext context) +149
   System.Web.WebPages.WebPageHttpHandler.ProcessRequestInternal(HttpContextBase httpContext) +155

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4682.0