Use of undefined constant auto_expire

When I integrated Auto Expire with a View I got the following alert:

Notice: Use of undefined constant auto_expire_NODE_TYPE - assumed 'auto_expire_NODE_TYPE' in views_handler_field_auto_expire_link_extend->render() (line 24 of /var/www/vhosts/letsrocket.com/httpdocs/sites/all/modules/auto_expire/views_handler_field_auto_expire_link_extend.inc).
Notice: Undefined variable: node in views_handler_field_auto_expire_link_extend->render() (line 24 of /var/www/vhosts/letsrocket.com/httpdocs/sites/all/modules/auto_expire/views_handler_field_auto_expire_link_extend.inc).
Notice: Trying to get property of non-object in views_handler_field_auto_expire_link_extend->render() (line 24 of /var/www/vhosts/letsrocket.com/httpdocs/sites/all/modules/auto_expire/views_handler_field_auto_expire_link_extend.inc).