Fatal error: Class 'Symfony\Component\Routing\RouteCollection' not found in /var/www/html/dev/spa/vendor/symfony/routing/Symfony/Component/Routing/Tests/Fixtures/validpattern.php on line 5

Call Stack:
    0.0003     234320   1. {main}() /var/www/html/dev/spa/vendor/symfony/routing/Symfony/Component/Routing/Tests/Fixtures/validpattern.php:0