Fatal error: Uncaught Error: Class "Illuminate\Database\Eloquent\Model" not found in C:\xampp\htdocs\astra-backoffice\vendor\laravel\framework\tests\Integration\Http\Fixtures\Author.php:7 Stack trace: #0 {main} thrown in C:\xampp\htdocs\astra-backoffice\vendor\laravel\framework\tests\Integration\Http\Fixtures\Author.php on line 7