Fatal error: Uncaught Error: Class "GraphQL\Validator\Rules\ValidationRule" not found in D:\htdocs\SuiteCRM\vendor\webonyx\graphql-php\src\Validator\Rules\LoneSchemaDefinition.php:15 Stack trace: #0 {main} thrown in D:\htdocs\SuiteCRM\vendor\webonyx\graphql-php\src\Validator\Rules\LoneSchemaDefinition.php on line 15