Fatal error: Uncaught Error: Class 'TestCase' not found in /home/devypfrfhn/avancement.devyp.fr/vendor/rebing/graphql-laravel/tests/GraphQLTest.php:9 Stack trace: #0 {main} thrown in /home/devypfrfhn/avancement.devyp.fr/vendor/rebing/graphql-laravel/tests/GraphQLTest.php on line 9