Hey,
It seems like these errors are coming from your DJ Classifieds extension. You need to get in touch with them as this plugin was created by them and from the looks of it, they must have modified their API but did not update the Komento integrations part.
Warning: require_once(/home/vapertre/public_html/administrator/administrator/components/com_djclassifieds/lib/djseo.php): failed to open stream: No such file or directory in /home/vapertre/public_html/components/com_djclassifieds/komento_plugin.php on line 28
Fatal error: require_once(): Failed opening required '/home/vapertre/public_html/administrator/administrator/components/com_djclassifieds/lib/djseo.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/vapertre/public_html/components/com_djclassifieds/komento_plugin.php on line 28