Fatal error: Uncaught Error: Interface "Inpsyde\Zettle\Provider" not found in /var/www/html1/wp-content/plugins/zettle-pos-integration/modules/zettle-onboarding/src/Provider/StateMachineProvider.php:16 Stack trace: #0 {main} thrown in /var/www/html1/wp-content/plugins/zettle-pos-integration/modules/zettle-onboarding/src/Provider/StateMachineProvider.php on line 16