Invalid controller specified (medias)

#0 /var/www/vhosts/comparagroup.fr/httpdocs/extranet/library/Zend/Controller/Front.php(954): Zend_Controller_Dispatcher_Standard->dispatch(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http))
#1 /var/www/vhosts/comparagroup.fr/httpdocs/extranet/index.php(74): Zend_Controller_Front->dispatch()
#2 {main}