Fatal error: Uncaught Error: Class 'Omnipay\Common\Message\AbstractResponse' not found in /home/app/htdocs/ninja/vendor/omnipay/gocardless/src/Message/CompletePurchaseResponse.php:11 Stack trace: #0 {main} thrown in /home/app/htdocs/ninja/vendor/omnipay/gocardless/src/Message/CompletePurchaseResponse.php on line 11