Fatal error: Uncaught Error: Class "Symfony\Component\OptionsResolver\Exception\InvalidArgumentException" not found in /home/customer/www/londonfencingclub.co.uk/public_html/vendor/symfony/options-resolver/Exception/InvalidOptionsException.php:21 Stack trace: #0 {main} thrown in /home/customer/www/londonfencingclub.co.uk/public_html/vendor/symfony/options-resolver/Exception/InvalidOptionsException.php on line 21