Fatal error: Class 'Symfony\Component\Routing\Matcher\Dumper\DumperCollection' not found in /var/www/html/dev/spa/vendor/symfony/routing/Symfony/Component/Routing/Matcher/Dumper/DumperPrefixCollection.php on line 20

Call Stack:
    0.0004     247288   1. {main}() /var/www/html/dev/spa/vendor/symfony/routing/Symfony/Component/Routing/Matcher/Dumper/DumperPrefixCollection.php:0