Fatal error: Uncaught Error: Interface "React\Promise\PromiseInterface" not found in /users/ms-it/www/oc/lib/composer/guzzlehttp/ringphp/src/Future/FutureInterface.php:19 Stack trace: #0 {main} thrown in /users/ms-it/www/oc/lib/composer/guzzlehttp/ringphp/src/Future/FutureInterface.php on line 19