Browsing to folder

[xxmp]

Hello
I have folders

Admin
   -la
   -la1
customer
    -he
    -he

other files
And i have an an upper menu that i use

    <h:form>
            <div class="upmenuOption">
                <h:commandLink  action="/index.xhtml?faces-redirect=true" value="Αρχική σελίδα"/>
            </div>
            <h:panelGroup layout="block" class="upmenuOption"
                          rendered="#{request.isUserInRole('administrator')}">
                    Πελατολόγιο <img src="#{facesContext.externalContext.requestContextPath}/images/downArrow.png" class="downarrow"/>
                <div class="subUpmenu" id="test2">
                    <div class="SubUpmenuOption">
                        <h:commandLink  action="/admin/index.xhtml?faces-redirect=true" value="Πελάτες"/>
                    </div>
                    <div class="SubUpmenuOption">
                        <h:commandLink  action="/admin/rantevou.xhtml?faces-redirect=true" value="Ραντεβού"/>
                    </div>
                    <div class="SubUpmenuOption">
                        <h:commandLink  action="/admin/history.xhtml?faces-redirect=true" value="Ιστορικό ασκήσεων"/>
                    </div>
                </div>
            </h:panelGroup>
            <h:panelGroup layout="block" class="upmenuOption"
                          rendered="#{request.isUserInRole('customer')}">
                    Η εκμάθησή μου <img src="#{facesContext.externalContext.requestContextPath}/images/downArrow.png" class="downarrow"/>
                <div class="subUpmenu" id="test2">
                    <div class="SubUpmenuOption">
                        <h:commandLink  action="/customer/index.xhtml?faces-redirect=true" value="Ραντεβού"/>
                    </div>
                    <div class="SubUpmenuOption">
                        <h:commandLink  action="/customer/history.xhtml?faces-redirect=true" value="Ιστορικό ασκήσεων"/>
                    </div>
                </div>
            </h:panelGroup>
            <div class="upmenuOption" style="width: 220px;">
                Tai Υi <img src="#{facesContext.externalContext.requestContextPath}/images/downArrow.png" class="downarrow"/>
                <div class="subUpmenu" id="test2">
                    <div class="SubUpmenuOption">
                        <h:commandLink  action="/taiyi/taiyi.xhtml?faces-redirect=true" value="Η ιστορία"/>
                    </div>
                    <div class="SubUpmenuOption">
                        <h:commandLink  action="/taiyi/cure.xhtml?faces-redirect=true" value="Θεραπείες"/>
                    </div>
                    <div class="SubUpmenuOption">
                        <h:commandLink  action="/taiyi/prepare.xhtml?faces-redirect=true" value="Προετοιμασία"/>
                    </div>
                </div>
            </div>
            <div class="upmenuOption">
                <h:commandLink  action="/taiyi/excerices.xhtml?faces-redirect=true" value="Ασκήσεις"/>
            </div>
            <div class="upmenuOption">
                <h:commandLink  action="testimorials.xhtml?faces-redirect=true" value="Testimorials"/>
            </div>
            <div class="upmenuOption" style="width: 220px;">
                <h:commandLink action="/contact.xhtml?faces-redirect=true" value="Επικοινωνία"/>
            </div>
            </h:form>

But when i get the the taiyi folder the contact it shows me Unable to find matching navigation case with from-view-id for ....