Fatal error: Uncaught Error: Interface "GraphQL\Executor\ExecutorImplementation" not found in /home/rosengar/www-craft/craft-rosengart/vendor/pixelandtonic/graphql-php/src/Executor/ReferenceExecutor.php:55 Stack trace: #0 {main} thrown in /home/rosengar/www-craft/craft-rosengart/vendor/pixelandtonic/graphql-php/src/Executor/ReferenceExecutor.php on line 55