right.js

But my link is not working my link is http://localhost/smspanel2/data/. 
this code is on my url page

$json = array(
			'meta'=>array(
				'page' => 1,
				'pages'=> 1,
				'perpage'=> -1,
				'total' => count($data),
				'sort' => 'asc',
				'field' => 'id'
			),
			'data' => $data
		);
		header('Content-Type: application/json');
		echo json_encode($json, JSON_PRETTY_PRINT);

when put my url then data is not showing and then i saw console and console is showing error
Uncaught TypeError: Cannot read property 'class' of undefined
    at Object.template (right.js:124)
    at HTMLTableCellElement.<anonymous> (scripts.bundle.js:1)
    at Function.each (vendors.bundle.js:1)
    at _.fn.init.each (vendors.bundle.js:1)
    at HTMLTableRowElement.<anonymous> (scripts.bundle.js:1)
    at Function.each (vendors.bundle.js:1)
    at _.fn.init.each (vendors.bundle.js:1)
    at Object.setupTemplateCell (scripts.bundle.js:1)
    at Object.insertData (scripts.bundle.js:1)
    at Object.l (scripts.bundle.js:1)