Fatal error: Uncaught Exception: The use of HANDLER_CLASS is no longer supported for injecting handlers. in C:\xampp\htdocs\ojs-3.5.0-4\lib\pkp\classes\core\PKPPageRouter.php:228 Stack trace: #0 C:\xampp\htdocs\ojs-3.5.0-4\lib\pkp\classes\core\Dispatcher.php(157): PKP\core\PKPPageRouter->route(Object(APP\core\Request)) #1 C:\xampp\htdocs\ojs-3.5.0-4\lib\pkp\classes\core\PKPApplication.php(429): PKP\core\Dispatcher->dispatch(Object(APP\core\Request)) #2 C:\xampp\htdocs\ojs-3.5.0-4\index.php(23): PKP\core\PKPApplication->execute() #3 {main} thrown in C:\xampp\htdocs\ojs-3.5.0-4\lib\pkp\classes\core\PKPPageRouter.php on line 228