Fatal error: Uncaught Error: Class "Illuminate\Database\Connection" not found in C:\xampp\htdocs\kalimark\vendor\laravel\framework\src\Illuminate\Database\MySqlConnection.php:12 Stack trace: #0 {main} thrown in C:\xampp\htdocs\kalimark\vendor\laravel\framework\src\Illuminate\Database\MySqlConnection.php on line 12