fixed ErrorAction::setAjaxError() method call in FrontController

app/FrontController.php

@@ -144,7 +144,7 @@ class FrontController
             $layout->setException($e);
             $error_action = new ErrorAction($e);
             if (isset($action) && is_subclass_of($action, 'AjaxAction')) {
-                $error_action->setAjax();
+                $error_action->setAjaxError();
             }
             return $layout->fetch($error_action);
         }