Fatal error: Interface 'Symfony\Component\Routing\RouterInterface' not found in /var/www/html/dev/spa/vendor/symfony/routing/Symfony/Component/Routing/Router.php on line 28

Call Stack:
    0.0010     282776   1. {main}() /var/www/html/dev/spa/vendor/symfony/routing/Symfony/Component/Routing/Router.php:0