Error: Invalid parameter: parameter must be a non-empty string

#0 /var/www/vhosts/adehon.org/gestion/ocupacional/application/modules/default/controllers/XmlController.php(29): Zend_Feed_Writer_Entry->setTitle('')
#1 /var/www/vhosts/adehon.org/gestion/ocupacional/library/Zend/Controller/Action.php(513): XmlController->ofertasAction()
#2 /var/www/vhosts/adehon.org/gestion/ocupacional/library/Zend/Controller/Dispatcher/Standard.php(289): Zend_Controller_Action->dispatch('ofertasAction')
#3 /var/www/vhosts/adehon.org/gestion/ocupacional/library/Zend/Controller/Front.php(954): Zend_Controller_Dispatcher_Standard->dispatch(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http))
#4 /var/www/vhosts/adehon.org/gestion/ocupacional/application/bootstrap.php(128): Zend_Controller_Front->dispatch()
#5 /var/www/vhosts/adehon.org/gestion/ocupacional/index.php(25): Bootstrap->runApp()
#6 {main}