Fatal error: Uncaught Error: Class "Symfony\Component\Config\Definition\Builder\ScalarNodeDefinition" not found in /home/fymuuvk/www/monialayritys/vendor/symfony/config/Definition/Builder/StringNodeDefinition.php:25 Stack trace: #0 {main} thrown in /home/fymuuvk/www/monialayritys/vendor/symfony/config/Definition/Builder/StringNodeDefinition.php on line 25