Fatal error: Uncaught Error: Class 'ApiPlatform\Metadata\GraphQl\Operation' not found in /var/www/legtux.org/users/weboconsulting/www/vendor/api-platform/core/src/Metadata/GraphQl/Subscription.php:17 Stack trace: #0 {main} thrown in /var/www/legtux.org/users/weboconsulting/www/vendor/api-platform/core/src/Metadata/GraphQl/Subscription.php on line 17