Fatal error: Uncaught Error: Class "Barryvdh\Debugbar\ServiceProvider" not found in E:\xampp\htdocs\stms\vendor\barryvdh\laravel-debugbar\src\LumenServiceProvider.php:7 Stack trace: #0 {main} thrown in E:\xampp\htdocs\stms\vendor\barryvdh\laravel-debugbar\src\LumenServiceProvider.php on line 7