Fatal error: Uncaught Error: Class 'Symfony\Component\Routing\RouteCollection' not found in /home/kolenggf/public_html/chamilo/vendor/symfony/routing/Tests/Fixtures/validpattern.php:6 Stack trace: #0 {main} thrown in /home/kolenggf/public_html/chamilo/vendor/symfony/routing/Tests/Fixtures/validpattern.php on line 6