im trying to load a servlet for grid(xml) and I got that error "Failed to load resource: the server responded with a status of 404 (Not Found) error in server". How can i solve this?
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Data Binding Example</title>
<!-- <script type="text/javascript" src="ext-5.1.1/ext-all.js"></script> -->
<script type="text/javascript" src="ext-5.1.1/build/ext-all-debug.js"></script>
<link rel="stylesheet" type="text/css"
    href="ext-5.1.1/examples/shared/example.css" />
<!-- GC -->
<script type="text/javascript"
    src="ext-5.1.1/examples/shared/include-ext.js"></script>
<script type="text/javascript"
    src="ext-5.1.1/examples/shared/options-toolbar.js"></script>
<!-- page specific -->
<script type="text/javascript" src="app.js"></script>
</head>
<body>
    <h1>Data Binding Example</h1>
<!--    <p> -->
<!--        This example expands upon the <a href="xml-grid.html">XML Grid -->
<!--            example</a> and shows how to implement data binding for a master-detail -->
<!--        view. -->
<!--    </p> -->
<!--    <p> -->
<!--        Note that the js is not minified so it is readable. See <a -->
<!--            href="app.js">app.js</a>. -->
<!--    </p> -->
    <div id="binding-example"></div>
</body>
</html>
 
     
    