Exception avec PrimeFaces

Bonsoir, en exécutant ma page .xhtml je rencontre cette exception que j'arrive pas à localiser la source :

Code:

[javax.enterprise.resource.webcontainer.jsf.application] (http-localhost-127.0.0.1-8383-1) Error Rendering View[/gererBonLivr.xhtml]: java.lang.StringIndexOutOfBoundsException: String index out of range: 0

Voilà le code de ma page

Code:

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<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:h="http://java.sun.com/jsf/html"
      xmlns:f="http://java.sun.com/jsf/core"
      xmlns:p="http://primefaces.org/ui"
      xmlns:ui="http://java.sun.com/jsf/facelets"> 
 
<h:head></h:head> 
<body> 
 <h:form id="entete"> 
        <ui:include src="entete.xhtml" />	
        <ui:include src="menuBar.xhtml"/>
 
      </h:form>
       <h:form id="AjoutB">
            <p:commandButton value="Ajouter un Bon de Livraison" icon="ui-icon-adds" actionListener="#{gererBonLivrCtrl.ajoutEvent(actionEvent)}" update=":edit:editB" oncomplete="bonLivAjout.show()"/>
        </h:form>
 
         <h:form id="b">
            <p:growl id="growl" showDetail="true" sticky="false"  />
            <p:dataTable var="bonlivraison" value="#{gererBonLivrCtrl.listbonlivr}" id="AjoutTab" widgetVar="BonLivTable"
                         emptyMessage="Bon non trouvé" paginator="true" rows="5" paginatorTemplate="{CurrentPageReport}  {FirstPageLink} {PreviousPageLink} {PageLinks} {NextPageLink} {LastPageLink} {RowsPerPageDropdown}" 
                         rowsPerPageTemplate="5,10,15" style="width:500px;font-size:13px;margin-left: 150px">
                  <f:facet name="header"> 
                          <p:outputPanel> 
                             <h:outputText value="Recherche:" /> 
                             <p:inputText id="globalFilter" onkeyup="BonLivTable.filter()" style="width:80px" /> 
                          </p:outputPanel> 
                  </f:facet> 
                   <p:column id="bonLivId" headerText="ID" filterBy="#{bonlivraison.id}" filterMatchMode="exact" footerText=" ID exacte"> 
                    <h:outputText value="#{bonlivraison.id}" /> 
                </p:column>
 
                    <p:column id="bonLivNum" headerText="Ref" filterBy="#{bonlivraison.num_bonlivr}" filterMatchMode="exact" footerText=" Num exacte"> 
                       <h:outputText value="#{bonlivraison.num_bonlivr}" /> 
                    </p:column>
 
                   <!--  <p:column id="articleRef" headerText="Ref" filterBy="#{bonlivraison.articles}" filterMatchMode="exact" footerText=" Ref exacte"> 
                       <h:outputText value="#{bonlivraison.articles}" /> 
                    </p:column> -->
 
                     <p:column style="width:4%"> 
                        <p:commandButton id="Editer"  update=":Actualise:displaye" icon="ui-icon-arrowrefresh-1-w" oncomplete="bonLivEdit.show();" actionListener="#{gererBonLivrCtrl.editEvent(bonlivraison.id)}" title="Editer"/>
                     </p:column>
                     <p:column style="width:4%"> 
                         <p:commandButton id="Supprimer"  update=":b:AjoutTab, :b:growl" icon="ui-icon-trash" action="#{gererBonLivrCtrl.doDeleteBonLivr(bonlivraison)}"  title="Supprime"/>
                      </p:column>
            </p:dataTable>
        </h:form>
 
        <h:form id="edit">   
 
            <p:dialog header="Ajout de bon" widgetVar="bonLivAjout" resizable="false" id="editB" modal="true">
 
                <p:growl id="growl" showDetail="true" sticky="false" life="10000"/>
                <h:panelGrid id="display" columns="2" cellpadding="4" style="margin:0 auto;"> 
 
                    <f:facet name="header">  
                        <h:outputLabel value="Veuillez procéder à l'ajout"/>
                    </f:facet> 
 
 
                    <h:outputLabel for="bonLivNum" title="Num" value="Numéro:" style="color: crimson;" />
                    <h:inputText value="#{gererBonLivrCtrl.bonlivraison.num_bonlivr}"  id="bonLivNum" required="true"/> 
 
                     </h:panelGrid> 
                <p:separator/>
                <p:commandButton value="Enregistrer" update=":a:AjoutTab, growl" actionListener="#{gererBonLivrCtrl.doAddBonLivr(actionEvent) }" oncomplete="bonLivAjout.hide()"  />
            </p:dialog>
 
        </h:form>
 
 
         <h:form id="Actualise">   
            <p:dialog header="Modification" widgetVar="bonLivEdit" resizable="false" id="editBon" modal="true"> 
                <p:growl id="growl" showDetail="true" sticky="false" />
                <h:panelGrid id="displaye" columns="2" cellpadding="4" style="margin:0 auto;"> 
 
                    <f:facet name="header">  
                        <h:outputLabel value="bonjour"/>
                    </f:facet> 
 
                     <h:outputLabel for="num" title="Num" value="Numéro:" style="color: crimson;" />
                    <h:inputText value="#{gererBonLivrCtrl.bonlivraison.num_bonlivr}"  id="num" /> 
 
 
                     </h:panelGrid> 
                <p:separator/>
                <p:commandButton value="Enregistrer" update=":b:AjoutTab, growl" actionListener="#{gererBonLivrCtrl.doUpdateBonLivr(actionEvent)}" oncomplete="bonLivEdit.hide()"/>
            </p:dialog>
 
        </h:form>
 
</body> 
</html>

Merci.