Fatal error: Uncaught Error: Class 'Illuminate\Database\Connection' not found in C:\xampp\htdocs\rabani-laravel-firebird\vendor\laravel\framework\src\Illuminate\Database\SQLiteConnection.php:15 Stack trace: #0 {main} thrown in C:\xampp\htdocs\rabani-laravel-firebird\vendor\laravel\framework\src\Illuminate\Database\SQLiteConnection.php on line 15