Fatal error: Uncaught Error: Class 'Symfony\Component\Console\Output\BufferedOutput' not found in C:\xampp\htdocs\print\vendor\symfony\console\Tests\Fixtures\DummyOutput.php:21 Stack trace: #0 {main} thrown in C:\xampp\htdocs\print\vendor\symfony\console\Tests\Fixtures\DummyOutput.php on line 21