Fatal error: Uncaught Error: Class 'Illuminate\Queue\QueueServiceProvider' not found in D:\xampp\htdocs\lib\pkp\lib\vendor\laravel\framework\src\Illuminate\Queue\Capsule\Manager.php:72 Stack trace: #0 D:\xampp\htdocs\lib\pkp\lib\vendor\laravel\framework\src\Illuminate\Queue\Capsule\Manager.php(42): Illuminate\Queue\Capsule\Manager->registerConnectors() #1 D:\xampp\htdocs\lib\pkp\classes\core\PKPApplication.inc.php(249): Illuminate\Queue\Capsule\Manager->__construct(Object(Illuminate\Container\Container)) #2 D:\xampp\htdocs\lib\pkp\classes\core\PKPApplication.inc.php(169): PKPApplication->initializeDatabaseConnection() #3 D:\xampp\htdocs\lib\pkp\includes\bootstrap.inc.php(41): PKPApplication->__construct() #4 D:\xampp\htdocs\index.php(65): require('D:\\xampp\\htdocs...') #5 {main} thrown in D:\xampp\htdocs\lib\pkp\lib\vendor\laravel\framework\src\Illuminate\Queue\Capsule\Manager.php on line 72