The following error occurred
Exception 'Exception': Could not load js file YAHOO.lang.html in paths (/var/www/service_center-3.23.0/library/htdocs/js, /var/www/service_center-3.23.0/htdocs/js)
/var/www/service_center-3.23.0/library/application/controllers/JsController.php(360)

Stack Trace:
/var/www/service_center-3.23.0/library/Zend/Controller/Action.php(515): Core_JsController::__call()
/var/www/service_center-3.23.0/library/Zend/Controller/Dispatcher/Standard.php(289): Zend_Controller_Action::dispatch()
/var/www/service_center-3.23.0/library/Zend/Controller/Front.php(954): Zend_Controller_Dispatcher_Standard::dispatch()
/var/www/service_center-3.23.0/library/bootstrap.php(159): Zend_Controller_Front::dispatch()
/var/www/service_center-3.23.0/html/index.php(13): require_once()