Fatal error: Uncaught Error: Interface "League\Config\ConfigurationBuilderInterface" not found in /var/www/live/demo8.thesynergate.com/sms_api_v2/vendor/league/config/src/Configuration.php:28 Stack trace: #0 {main} thrown in /var/www/live/demo8.thesynergate.com/sms_api_v2/vendor/league/config/src/Configuration.php on line 28