Error: Invalid controller specified (comunicado_rnb.pdf)

#0 /usr/home/rnbcosmeticos.net/web/library/Zend/Controller/Front.php(954): Zend_Controller_Dispatcher_Standard->dispatch(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http))
#1 /usr/home/rnbcosmeticos.net/web/application/bootstrap.php(188): Zend_Controller_Front->dispatch()
#2 /usr/home/rnbcosmeticos.net/web/index.php(25): Bootstrap->runApp()
#3 {main}