Fatal error: Uncaught Error: Interface "GuzzleHttp\Event\SubscriberInterface" not found in /users/ms-it/www/oc/lib/composer/guzzlehttp/guzzle/src/Subscriber/Mock.php:16 Stack trace: #0 {main} thrown in /users/ms-it/www/oc/lib/composer/guzzlehttp/guzzle/src/Subscriber/Mock.php on line 16