error in web.xml

Hi

I am getting following error in web.xml for follwing lines

error-failed to read schema document1)could not find the document2)the document could not be read

<web-app id="WebApp_ID" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

[426 byte] By [smita_smitaa] at [2007-10-2 0:51:12]