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