Fatal error: Uncaught Error: Class 'GraphQL\Validator\Rules\ValidationRule' not found in /home/devypfrfhn/avancement.devyp.fr/vendor-old/webonyx/graphql-php/src/Validator/Rules/ScalarLeafs.php:14 Stack trace: #0 {main} thrown in /home/devypfrfhn/avancement.devyp.fr/vendor-old/webonyx/graphql-php/src/Validator/Rules/ScalarLeafs.php on line 14