Fatal error: Uncaught Error: Class "GraphQL\Server\RequestError" not found in /home/dodom2/public_html/cgilink.biz/vendor/webonyx/graphql-php/src/Server/Exception/InvalidQueryParameter.php:7 Stack trace: #0 {main} thrown in /home/dodom2/public_html/cgilink.biz/vendor/webonyx/graphql-php/src/Server/Exception/InvalidQueryParameter.php on line 7