Fatal error: Uncaught Error: Interface "GuzzleHttp\Message\MessageInterface" not found in /users/ms-it/www/oc/lib/composer/guzzlehttp/guzzle/src/Message/AbstractMessage.php:6 Stack trace: #0 {main} thrown in /users/ms-it/www/oc/lib/composer/guzzlehttp/guzzle/src/Message/AbstractMessage.php on line 6