Fatal error: Interface 'Symfony\Component\Config\Loader\LoaderInterface' not found in /var/www/html/dev/spa/vendor/symfony/routing/Symfony/Component/Routing/Loader/AnnotationClassLoader.php on line 59

Call Stack:
    0.0008     278256   1. {main}() /var/www/html/dev/spa/vendor/symfony/routing/Symfony/Component/Routing/Loader/AnnotationClassLoader.php:0