Fatal error: Uncaught Error: Class "ApiPlatform\Metadata\GraphQl\Operation" not found in /home/Xereah/public_html/pstruzik/vendor/api-platform/core/src/Metadata/GraphQl/Subscription.php:19 Stack trace: #0 {main} thrown in /home/Xereah/public_html/pstruzik/vendor/api-platform/core/src/Metadata/GraphQl/Subscription.php on line 19