Fatal error: Uncaught Error: Class "Symfony\Component\Console\Output\ConsoleOutput" not found in D:\programs\xampp\htdocs\blog\vendor\laravel\framework\src\Illuminate\Testing\ParallelConsoleOutput.php:9 Stack trace: #0 {main} thrown in D:\programs\xampp\htdocs\blog\vendor\laravel\framework\src\Illuminate\Testing\ParallelConsoleOutput.php on line 9