500 Servlet Exception

/jsp/about.jsp:51: can't open include of 'header.jsp'.  '/home/apnao3/public_html/apnaconnecticut/jsp/header.jsp'
does not exist.

49:          <div id="container">
50:          	<div id="header">
51:  			<%@ include file="header.jsp" %>
52:              <!--    <a href="index.jsp"><img src="../images/logo.gif"
id="logo" /></a>
53:  				<a href="http://www.krishnatraining.com"><img border="0" WIDTH="155"
HEIGHT="110" src="../images/krishnatraining.gif"></a>