Invalid controller specified (about)

in /home/content/39/5520839/html/_sites/wingsshipping.com/library/Zend/Controller/Dispatcher/Standard.php at line 242

Type:Zend_Controller_Dispatcher_Exception
#0 /home/content/39/5520839/html/_sites/wingsshipping.com/library/Zend/Controller/Front.php(946): Zend_Controller_Dispatcher_Standard->dispatch(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http))
#1 /home/content/39/5520839/html/_sites/wingsshipping.com/library/Exoof/Bootstrap.php(345): Zend_Controller_Front->dispatch()
#2 /home/content/39/5520839/html/_sites/wingsshipping.com/library/Exoof/Bootstrap.php(32): Exoof_Bootstrap->_render(false)
#3 /home/content/39/5520839/html/_sites/wingsshipping.com/index.php(25): Exoof_Bootstrap->run()
#4 {main}