Fatal error: Uncaught Error: Class 'Omnipay\Common\AbstractGateway' not found in /home/app/htdocs/ninja/vendor/alfaproject/omnipay-skrill/src/Omnipay/Skrill/Gateway.php:14 Stack trace: #0 {main} thrown in /home/app/htdocs/ninja/vendor/alfaproject/omnipay-skrill/src/Omnipay/Skrill/Gateway.php on line 14