Fatal error: Uncaught Error: Class "Illuminate\Queue\SyncQueue" not found in /opt/lampp/htdocs/msjopb/vendor/laravel/framework/src/Illuminate/Queue/BackgroundQueue.php:7 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/msjopb/vendor/laravel/framework/src/Illuminate/Queue/BackgroundQueue.php on line 7