-<link rel="stylesheet" href="<?php p(OCP\Util::linkTo('grauphel','grauphel.css')); ?>" type="text/css"/>
+<link rel="stylesheet" href="<?php p(OC::$server->getURLGenerator()->linkTo('grauphel','grauphel.css')); ?>" type="text/css"/>
<div id="app-content" class="content">
<div id="searchresults" class="hidden"></div>