web xml session-config

bonjour ,
mon fichier web.xml contient deux croix rouges que j'arrive pas à résoudre et decortiquer le probléme .
voilà mon fichier web.xml

Code:

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<?xml version="1.0" encoding="UTF-8"?>
<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">
	
	<display-name>StrutsHibernate</display-name>
	
	<context-param>
		<param-name>log4jConfigLocation</param-name>
		<param-value>/WEB-INF/classes/log4j.properties</param-value>
	</context-param>
	
	<servlet>
		<servlet-name>action</servlet-name>
		<servlet-class>
			org.apache.struts.action.ActionServlet
		</servlet-class>
		<init-param>
			<param-name>config</param-name>
			<param-value>/WEB-INF/struts-config.xml</param-value>
		</init-param>
		<init-param>
			<param-name>debug</param-name>
			<param-value>2</param-value>
		</init-param>
		<init-param>
			<param-name>detail</param-name>
			<param-value>2</param-value>
		</init-param>
		
	x	<session-config>
      			<session-timeout>60</session-timeout> 
		</session-config>
		
		<load-on-startup>2</load-on-startup>
	</servlet>
	
	<error-page>
            <error-code>404</error-code>
            <location>/pages/Exception.jsp</location>
	</error-page>
	
	<servlet-mapping>
		<servlet-name>action</servlet-name>
		<url-pattern>*.do</url-pattern>
	</servlet-mapping>
	
	
	<!-- The Usual Welcome File List -->
	
	<welcome-file-list>
		<welcome-file>index.jsp</welcome-file>
		<welcome-file>index.html</welcome-file>
		<welcome-file>index.htm</welcome-file>
	</welcome-file-list>
	
	<!-- Struts Tag Library Descriptors -->
x	<taglib>
		<taglib-uri>/tags/struts-bean</taglib-uri>
		<taglib-location>/WEB-INF/tld/struts-bean.tld</taglib-location>
	</taglib>

	<taglib>
		<taglib-uri>/tags/struts-html</taglib-uri>
		<taglib-location>/WEB-INF/tld/struts-html.tld</taglib-location>
	</taglib>

	<taglib>
		<taglib-uri>/tags/struts-logic</taglib-uri>
		<taglib-location>/WEB-INF/tld/struts-logic.tld</taglib-location>
	</taglib>
	
	
</web-app>

dans la premiére croix en rouge le message est :

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cvc-complex-type.2.4.a: Invalid content was found starting with element 'session-config'. One of '{"http://java.sun.com/xml/ns/j2ee":init-
 param, "http://java.sun.com/xml/ns/j2ee":load-on-startup, "http://java.sun.com/xml/ns/j2ee":run-as, "http://java.sun.com/xml/ns/
 j2ee":security-role-ref}' is expected.

et la seconde croix rouge le message est :

Code:

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cvc-complex-type.2.4.a: Invalid content was found starting with element 'taglib'. One of '{"http://java.sun.com/xml/ns/j2ee":description, 
 "http://java.sun.com/xml/ns/j2ee":display-name, "http://java.sun.com/xml/ns/j2ee":icon, "http://java.sun.com/xml/ns/
 j2ee":distributable, "http://java.sun.com/xml/ns/j2ee":context-param, "http://java.sun.com/xml/ns/j2ee":filter, "http://java.sun.com/xml/
 ns/j2ee":filter-mapping, "http://java.sun.com/xml/ns/j2ee":listener, "http://java.sun.com/xml/ns/j2ee":servlet, "http://java.sun.com/xml/
 ns/j2ee":servlet-mapping, "http://java.sun.com/xml/ns/j2ee":session-config, "http://java.sun.com/xml/ns/j2ee":mime-mapping, "http://
 java.sun.com/xml/ns/j2ee":welcome-file-list, "http://java.sun.com/xml/ns/j2ee":error-page, "http://java.sun.com/xml/ns/j2ee":jsp-config, 
 "http://java.sun.com/xml/ns/j2ee":security-constraint, "http://java.sun.com/xml/ns/j2ee":login-config, "http://java.sun.com/xml/ns/
 j2ee":security-role, "http://java.sun.com/xml/ns/j2ee":env-entry, "http://java.sun.com/xml/ns/j2ee":ejb-ref, "http://java.sun.com/xml/ns/
 j2ee":ejb-local-ref, "http://java.sun.com/xml/ns/j2ee":service-ref, "http://java.sun.com/xml/ns/j2ee":resource-ref, "http://java.sun.com/
 xml/ns/j2ee":resource-env-ref, "http://java.sun.com/xml/ns/j2ee":message-destination-ref, "http://java.sun.com/xml/ns/j2ee":message-
 destination, "http://java.sun.com/xml/ns/j2ee":locale-encoding-mapping-list}' is expected.

merci pour votre explication et votre aide.