Warning: require_once(wfHelperBin.php): failed to open stream: No such file or directory in /var/www/wp-content/plugins/wordfence/lib/wordfenceClass.php on line 21

Fatal error: require_once(): Failed opening required 'wfHelperBin.php' (include_path='.:') in /var/www/wp-content/plugins/wordfence/lib/wordfenceClass.php on line 21