Fatal error: Uncaught Error: Class "Symfony\Component\DependencyInjection\Extension\Extension" not found in /var/www/apps/docPhp/git/phpDocumentor/tests/data/extensions/example/Extension.php:10 Stack trace: #0 {main} thrown in /var/www/apps/docPhp/git/phpDocumentor/tests/data/extensions/example/Extension.php on line 10