Fatal error: Uncaught Error: Class "Illuminate\Database\Connection" not found in E:\xampp\htdocs\stms\vendor\laravel\framework\src\Illuminate\Database\MySqlConnection.php:16 Stack trace: #0 {main} thrown in E:\xampp\htdocs\stms\vendor\laravel\framework\src\Illuminate\Database\MySqlConnection.php on line 16