Fatal error: Uncaught Error: Class 'Illuminate\Support\Manager' not found in /opt/lampp/htdocs/kuesioner/vendor/laravel/framework/src/Illuminate/Mail/TransportManager.php:20 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/kuesioner/vendor/laravel/framework/src/Illuminate/Mail/TransportManager.php on line 20