Fatal error: Uncaught Error: Interface "GraphQL\Language\AST\TypeSystemDefinitionNode" not found in /home/telefonai/public_html/test.telefonai.eu/vendor/webonyx/graphql-php/src/Language/AST/TypeExtensionNode.php:16 Stack trace: #0 {main} thrown in /home/telefonai/public_html/test.telefonai.eu/vendor/webonyx/graphql-php/src/Language/AST/TypeExtensionNode.php on line 16