我在zend框架上收到以下错误:
Fatal error: Uncaught exception 'Zend_Controller_Dispatcher_Exception' with message 'Invalid controller specified (error)' in F:\wamp\www\helloworld\library\Zend\Controller\Dispatcher\Standard.php:245
Stack trace:
#0 F:\wamp\www\helloworld\library\Zend\Controller\Front.php(946):Zend_Controller_Dispatcher_Standard->dispatch(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http))
#1 F:\wamp\www\helloworld\library\Zend\Controller\Front.php(212): Zend_Controller_Front->dispatch()
#2 F:\wamp\www\helloworld\web_root\index.php(10): Zend_Controller_Front::run('../application/...')
#3 {main} thrown in F:\wamp\www\helloworld\library\Zend\Controller\Dispatcher\Standard.php on line 245
造成这种情况的原因是什么,我该如何解决？