HTTP Error 500.19 - Internal Server Error

The requested page cannot be accessed because the related configuration data for the page is invalid.

Detailed Error Information:

Module   RequestFilteringModule
Notification   BeginRequest
Handler   ASPClassic
Error Code   0x800700b7
Config Error   Cannot add duplicate collection entry of type 'add' with unique key attribute 'segment' set to 'visitors'
Config File   \\?\C:\inetpub\wwwroot\ScreenSee\web.config
Requested URL   http://able-technologies.co.uk:80/screensee/web124/seeshow.asp?CLIENT=able&PIN=19970003&SHOW=server&USERID=&
Physical Path   C:\inetpub\wwwroot\ScreenSee\web124\seeshow.asp
Logon Method   Not yet determined
Logon User   Not yet determined

Config Source:

   15:                    <add segment="images" />
   16:                    <add segment="visitors" />
   17:                </hiddenSegments>

More Information:

This error occurs when there is a problem reading the configuration file for the Web server or Web application. In some cases, the event logs may contain more information about what caused this error.

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