Notice: Undefined variable: _MAMBOTS in /srv/www/htdocs/plugins/content/jw_allvideos.php on line 97

Notice: Trying to get property of non-object in /srv/www/htdocs/plugins/content/jw_allvideos.php on line 97

I recently replicated a Joomla! site on a different server.  Everything works fine except I get the above errors on almost all pages.

Any idea what this could be?  Your help and time is greatly appreciated!