Fatal error: Uncaught Error: Interface 'Sendpulse\RestApi\ApiInterface' not found in /var/www/u0820075/data/vendor/sendpulse/rest-api/src/ApiClient.php:19 Stack trace: #0 {main} thrown in /var/www/u0820075/data/vendor/sendpulse/rest-api/src/ApiClient.php on line 19