Fatal error: Class 'Symfony\Component\Config\FileLocator' not found in /var/www/html/dev/spa/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/Config/FileLocator.php on line 23

Call Stack:
    0.0003     238128   1. {main}() /var/www/html/dev/spa/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/Config/FileLocator.php:0