Fatal error: Uncaught Error: Class 'Symfony\Component\Config\Definition\Exception\Exception' not found in /home/soh-works/www/Stepup_test/vendor/symfony/config/Definition/Exception/InvalidDefinitionException.php:19 Stack trace: #0 {main} thrown in /home/soh-works/www/Stepup_test/vendor/symfony/config/Definition/Exception/InvalidDefinitionException.php on line 19