Error on my front page

Hi I have an error on my front page when clicking on link button. Previously it worked fine for a second then it stopped working. Here is what I get:

var templateDir = “https://wpengine.com/wp-content/themes/decode”;
/* */
/* */
var ajaxurl = ‘https://wpengine.com/wp-admin/admin-ajax.php’;
jQuery( document ).ready( function() { jQuery( ‘a.confirm’).click( function() { if ( confirm( ‘Are you sure?’ ) ) return true; else return false; }); });

Any help would be appreciated thanks!

https://www.ads-software.com/plugins/ajaxify-wordpress-site/