Fatal error: Uncaught Error: Interface "Symfony\Component\Yaml\Exception\ExceptionInterface" not found in /var/www/live/demo8.thesynergate.com/sms_api_v2/vendor/symfony/yaml/Exception/RuntimeException.php:19 Stack trace: #0 {main} thrown in /var/www/live/demo8.thesynergate.com/sms_api_v2/vendor/symfony/yaml/Exception/RuntimeException.php on line 19