jos-Error: Controlador inválido: nombre='list', formato='opensearch'

JSite -> dispatch() @ /usr/home/paudenavia/www/index.php:42
JError :: raiseError() @ /usr/home/paudenavia/www/includes/application.php:205
JError :: raise() @ /usr/home/paudenavia/www/libraries/joomla/error/error.php:251