Fatal error: Uncaught Error: Class "GraphQL\Language\AST\Node" not found in /home/telefonai/public_html/test.telefonai.eu/vendor/webonyx/graphql-php/src/Language/AST/UnionTypeDefinitionNode.php:7 Stack trace: #0 {main} thrown in /home/telefonai/public_html/test.telefonai.eu/vendor/webonyx/graphql-php/src/Language/AST/UnionTypeDefinitionNode.php on line 7