Unexpected error parsing /WEB-INF/web.xml

Question

Web.xml文件如下：
<?xml version="1.0" encoding="UTF-8"?>
 
 <web-app 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"
    version="2.4">
 
    <description>
        JSF Demo
    </description>
    <display-name>JSF Demo</display-name>
    <servlet>
        <servlet-name>Faces Servlet</servlet-name>
        <servlet-class>
            javax.faces.webapp.FacesServlet
        </servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    
    <listener>
    <listener-class>cn.com.pbi.netmgr.web.morning.MainContextListener</listener-class>
</listener>
    
   
    <servlet-mapping>
        <servlet-name>Faces Servlet</servlet-name>
        <url-pattern>*.faces</url-pattern>
    </servlet-mapping>
   
    <welcome-file-list>
        <welcome-file>pages/index.jsp</welcome-file>
    </welcome-file-list> </web-app>