jos-Error: Category #0 not found

JSite -> dispatch() @ /var/www/index.php:42
JComponentHelper :: renderComponent() @ /var/www/includes/application.php:198
JComponentHelper :: executeComponent() @ /var/www/libraries/joomla/application/component/helper.php:357
require_once() @ /var/www/libraries/joomla/application/component/helper.php:388
JController -> execute() @ /var/www/components/com_eventlist/eventlist.php:44
EventListController -> display() @ /var/www/libraries/joomla/application/component/controller.php:754
JController -> display() @ /var/www/components/com_eventlist/controller.php:55
EventListViewCategoryevents -> display() @ /var/www/libraries/joomla/application/component/controller.php:715
JError :: raiseError() @ /var/www/components/com_eventlist/views/categoryevents/view.html.php:79
JError :: raise() @ /var/www/libraries/joomla/error/error.php:251