Fatal error: Uncaught Error: Class 'Symfony\Component\OptionsResolver\Exception\InvalidArgumentException' not found in /var/www/app/appregwebservice/vendor/symfony/options-resolver/Exception/InvalidOptionsException.php:21 Stack trace: #0 {main} thrown in /var/www/app/appregwebservice/vendor/symfony/options-resolver/Exception/InvalidOptionsException.php on line 21