My local solution next:
In your themes in file single.php add next rows
<div id="fb-root"></div>
<script>(function(d, s, id) {
var js, fjs = d.getElementsByTagName(s)[0];
if (d.getElementById(id)) return;
js = d.createElement(s); js.id = id;
js.src = "//connect.facebook.net/en_EN/sdk.js#xfbml=1&version=v2.3";
fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));</script>
and add this rows in plugin file /plugins/digg-digg/digg-digg.php
rows 316-320
(
before this line
$floatButtonsContainer .= “<div class=’dd_button_v’>” . $finalURL . “</div><div style=’clear:left’></div>”;
)
if(preg_match("#.*name='fb_share'.*share_url='(?<url>[^']+)'.*#sU", $finalURL, $m)){
if (isset($m['url']))
$finalURL = '<div class="fb-share-button" data-href="' . $m['url'] . '" data-layout="button"></div>';
}