Fatal error: Uncaught Error: Class 'Symfony\Component\Console\Output\BufferedOutput' not found in /home/noct-c/www/tanakahashi/vendor/symfony/console/Tests/Fixtures/DummyOutput.php:21 Stack trace: #0 {main} thrown in /home/noct-c/www/tanakahashi/vendor/symfony/console/Tests/Fixtures/DummyOutput.php on line 21