use Ip address instead of localhost or use Live server url it is working for me
<?php
$fullBaseUrl = "http://127.0.0.1/meme_latest";
$url = $fullBaseUrl.'/designers/attachment/time/'.$value['filetime'].'/uploadTab/imgattach';
//(http://localhost/msme_latest/designers/attachment/time/1394432246/uploadTab/imgattach)
$html= '<a href="'.$url.'">Test link</a>';
//echo $html; die;
include("../mpdf.php");
$mpdf=new mPDF();
$mpdf->WriteHTML($html);
$mpdf->Output();
exit;
?>