Fatal error: Uncaught Error: Class 'GoCardlessPro\Core\Exception\ApiException' not found in /home/app/htdocs/ninja/vendor/gocardless/gocardless-pro/lib/Core/Exception/InvalidApiUsageException.php:5 Stack trace: #0 {main} thrown in /home/app/htdocs/ninja/vendor/gocardless/gocardless-pro/lib/Core/Exception/InvalidApiUsageException.php on line 5