Fatal error: Uncaught Error: Interface 'Magento\Framework\GraphQl\Query\ResolverInterface' not found in /home/esecureh/public_html/magdemo/dev/tests/api-functional/_files/Magento/TestModuleGraphQlQuery/Model/Resolver/TestUnion.php:17 Stack trace: #0 {main} thrown in /home/esecureh/public_html/magdemo/dev/tests/api-functional/_files/Magento/TestModuleGraphQlQuery/Model/Resolver/TestUnion.php on line 17