Fatal error: Class 'Symfony\Component\Routing\Loader\XmlFileLoader' not found in /var/www/html/dev/spa/vendor/symfony/routing/Symfony/Component/Routing/Tests/Fixtures/CustomXmlFileLoader.php on line 21

Call Stack:
    0.0005     234880   1. {main}() /var/www/html/dev/spa/vendor/symfony/routing/Symfony/Component/Routing/Tests/Fixtures/CustomXmlFileLoader.php:0