Fatal error: Uncaught Error: Class "Omnipay\Common\AbstractGateway" not found in /home/grouugah/learning.group-awd.org/vendor/omnipay/paypal/src/RestGateway.php:152 Stack trace: #0 {main} thrown in /home/grouugah/learning.group-awd.org/vendor/omnipay/paypal/src/RestGateway.php on line 152