Fatal error: Uncaught Error: Class 'GoCardlessPro\Integration\IntegrationTestBase' not found in /home/app/htdocs/ninja/vendor/gocardless/gocardless-pro/tests/Integration/CustomersIntegrationTest.php:9
Stack trace:
#0 {main}
thrown in /home/app/htdocs/ninja/vendor/gocardless/gocardless-pro/tests/Integration/CustomersIntegrationTest.php on line 9