Fatal error: Uncaught Error: Class 'Symfony\Component\Routing\RouteCollection' not found in /var/www/html/bak/20201028/web/admin/vendor/symfony/routing/Tests/Fixtures/validpattern.php:6 Stack trace: #0 {main} thrown in /var/www/html/bak/20201028/web/admin/vendor/symfony/routing/Tests/Fixtures/validpattern.php on line 6