Component ID j_id?:name has already been found in the view.
===

i have error HTTP Status 500 in my project. i am using integration of jsf spring and hibernate. i have no idea to solve this problem.
i have added the necessary jar files.
the error is:

    description The server encountered an internal error () that prevented it from fulfilling this request.
    exception: javax.servlet.ServletException: Component ID j_idt4:name has already been found in the view.  
    	javax.faces.webapp.FacesServlet.service(FacesServlet.java:321)

the trace is:

    </head>
    <body>
    <h1>اضافه کردن پرسنل جد?د</h1>
     		
      +id: j_idt4
       type: javax.faces.component.html.HtmlForm@1810af25
        +id: j_idt5
         type: javax.faces.component.html.HtmlPanelGrid@cc4dacd
          +id: j_idt6
           type: 
                  شماره پرسنل? : 
    				
          +id: name
           type: javax.faces.component.html.HtmlInputText@6f5ab27a

personel.xhtml

    <?xml version="1.0" encoding="utf-8" ?>
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:p="http://primefaces.prime.com.tr/ui"
    >
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>اطلاعات پرسنلی</title>
    </head>
    <body>
    <h1>اضافه کردن پرسنل جدید</h1>
     		<h:form>
     
     			<h:panelGrid columns="6" dir="rtl">
                  شماره پرسنلی : 
    				<h:inputText id="name" value="#{personelMB.personel_id}" 
    					size="20" required="true"
    					label="id" >
    				</h:inputText>
    				نام : 
    				<h:inputText id="name" value="#{personelMB.pname}" 
    					size="20" required="true"
    					label="Name" >
    				</h:inputText>
     
                     نام خانوادگی: 
    				<h:inputText id="family" value="#{personelMB.pfamily}" 
    					size="20" required="true"
    					label="family" >
    				</h:inputText> 
    				
    				آدرس : 
    				<h:inputTextarea id="address" value="#{personelMB.paddress}" 
    					cols="30" rows="10" required="true"
    					label="Address" >
    				</h:inputTextarea>
    
     
              تلفن:  
    				<h:inputText id="tel" value="#{personelMB.pphone}" 
    					size="20" required="true"
    					label="tel" >
    				</h:inputText> 
    			</h:panelGrid>
     
    			<h:commandButton value="درج اطلاعات" action="#{personelMB.addPersonel()}" />
     
     		</h:form>
    </body>
    </html>

please help me.