An exception occured while bootstrapping the application.

Invalid value passed to append; please use appendMeta()
Stack Trace:
#0 /usr/share/php/Zend/View/Helper/HeadMeta.php(164): Zend_View_Helper_HeadMeta->append(Object(stdClass))
#1 /var/www/autoracingtours/application/controllers/RaceController.php(80): Zend_View_Helper_HeadMeta->__call('appendName', Array)
#2 /var/www/autoracingtours/application/controllers/RaceController.php(80): Zend_View_Helper_HeadMeta->appendName('description', NULL)
#3 /usr/share/php/Zend/Controller/Action.php(516): RaceController->raceAction()
#4 /usr/share/php/Zend/Controller/Dispatcher/Standard.php(295): Zend_Controller_Action->dispatch('raceAction')
#5 /usr/share/php/Zend/Controller/Front.php(954): Zend_Controller_Dispatcher_Standard->dispatch(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http))
#6 /usr/share/php/Zend/Application/Bootstrap/Bootstrap.php(97): Zend_Controller_Front->dispatch()
#7 /usr/share/php/Zend/Application.php(366): Zend_Application_Bootstrap_Bootstrap->run()
#8 /var/www/autoracingtours/public_html/index.php(35): Zend_Application->run()
#9 {main}