probleme affichage depuis base de données

Bonjour, je sui debutant en struts et je narrive po a regler un problem depui klk jours
En fait je ve lister une table de clients dan une page jsp, mai je rencontre tjrs un problem de type :

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message No action instance for path /viewClients could be

Je vous montre mon fichier struts-config.xml

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<?xml version="1.0" encoding="ISO-8859-1" ?>
<!DOCTYPE struts-config PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 1.1//EN"
"http://jakarta.apache.org/struts/dtds/struts-config_1_1.dtd">
<struts-config>
 
 
 
 
<form-beans>
<form-bean name="agentForm" type="com.sat.struts.form.AgentForm" />
<form-bean name="vodForm" type="com.sat.struts.form.VodForm" />
<form-bean name="clientForm" type="com.sat.struts.form.ClientForm" />
</form-beans>
 
<action-mappings>
 
<action 
         attribute="agentForm"
         name="agentForm"
         input="/form/home.jsp"
         path="/home"
         scope="request"
         type="com.sat.struts.action.SubmitAction">
         <forward name="failure" path="/form/errorLogin.jsp" />
         <forward name="success" path="/form/menu.jsp" />
</action>
 
<action 
          attribute="agentForm"
          name="agentForm"
          parameter="do"
          path="/viewUsers"
 
          scope="request"
          type="com.sat.struts.action.UsersListAction">
  		  <forward name="showList" path="/form/usersList.jsp" />
  		  <forward name="showListAfterDelete" path="/viewUsers.do?do=showUsers" />
 
</action>
 
<action 
          attribute="clientForm"
          name="clientForm"
          parameter="do"
          path="/viewClients"
 
          scope="request"
          type="com.sat.struts.action.ClientsListAction">
  		  <forward name="showList" path="/form/clientsList.jsp" />
  		  <forward name="showListAfterDelete" path="/viewClients.do?do=showClients" />
 
</action>
 
 
<action 
  		  path="/logout"
          type="com.sat.struts.action.LogoutAction">
          <forward name="logout" path="/form/home.jsp" />
</action>
 
<action 
          attribute="vodForm"
          name="vodForm"
          parameter="do"
          path="/viewVods"
          input="/form/vod.jsp"
          scope="request"
          type="com.sat.struts.action.VodListAction">
  		  <forward name="showList" path="/form/VodList.jsp" />
  		  <forward name="showListAfterDelete" path="/viewVods.do?do=showVods" />
  </action>
 
 
</action-mappings>
<message-resources parameter="com.sat.struts.ApplicationResources.properties"/>
</struts-config>

Voici mon action :

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package com.sat.struts.action;
 
import java.sql.SQLException;
import java.util.Collection;
 
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
 
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.actions.DispatchAction;
 
 
import com.sat.metier.Agent;
import com.sat.struts.form.ClientForm;
 
 
 
 
public class ClientsListAction extends DispatchAction{
 
	public ActionForward deleteClient(
			ActionMapping mapping,
			ActionForm form,
			HttpServletRequest request,
			HttpServletResponse response) throws SQLException {
			//ClientForm clientForm = (ClientForm) form;
			String nom =request.getParameter("nom");
 
			Agent user = new Agent();
			user.deleteByNom(nom);
 
			return mapping.findForward("showListAfterDelete");
		}
 
 
 
		public ActionForward showClients(
				ActionMapping mapping,
				ActionForm form,
				HttpServletRequest request,
				HttpServletResponse response) {
				ClientForm clientForm = (ClientForm) form;
 
 
 
 
				Agent user = new Agent();
				Collection c;
				try {
					c = (Collection) user.Lister3();
 
					 System.out.println(c.toString());
					clientForm.setClients(c);
 
 
					System.out.println("la collection est remplie");
				} catch (Exception e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
 
 
				return mapping.findForward("showList");
			}

et voici le code de ma page jsp

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</style></head>
 
<body>
<table width="162" height="88" border="1" align="right">
    <tr>
      <td width="152" height="82"><img src="/sat/form/images/logo_meditel.jpg" width="152" height="77"></td>
    </tr>
  </table>
<p>&nbsp;</p>
<p>&nbsp;</p>
<table width="335" border="1" align="center">
  <tr>
    <td width="325"><p class="Style1">LA LISTE DES CLIENTS EN TRAITEMENT </p>    </td>
  </tr>
</table>
<p>&nbsp;</p>
<table width="757" border="1">
  <tr>
    <td class="Style1">CLIENT</td>
    <td class="Style1">ADRESSE</td>
 
  </tr>
  <logic:empty name="clientForm" property="clients">
<tr>
<td colspan="5">Tous Les Clients Sont Servis</td>
</tr>
	</logic:empty>
		<logic:notEmpty name="clientForm" property="clients">
		<logic:iterate name="clientForm" property="clients" id="client">
<tr>
 
			<td width="325"><p class="Style1"><bean:write name="client" property="nom" /></td>
			<td width="325"><p class="Style1"><bean:write name="client" property="adresse" /></td>
 
 
 
 
		</logic:iterate>
		</logic:notEmpty>
</table>
<p>&nbsp;</p>
 
<div align="center"><span class="Style4"><a href="/sat/form/menu.jsp" class="Style2">RETOUR AU MENU PRINCIPAL</a> </span></div>
</body>
</html>

SVP aidez moi
merci davance