Fatal error: Uncaught Error: Class "GraphQL\Validator\Rules\ValidationRule" not found in /var/www/crm_killing_ninja/vendor/webonyx/graphql-php/src/Validator/Rules/UniqueEnumValueNames.php:15 Stack trace: #0 {main} thrown in /var/www/crm_killing_ninja/vendor/webonyx/graphql-php/src/Validator/Rules/UniqueEnumValueNames.php on line 15