Fatal error: Uncaught Error: Class 'GraphQL\Validator\ASTValidationContext' not found in /home/esecureh/public_html/magdemo/vendor/webonyx/graphql-php/src/Validator/SDLValidationContext.php:7 Stack trace: #0 {main} thrown in /home/esecureh/public_html/magdemo/vendor/webonyx/graphql-php/src/Validator/SDLValidationContext.php on line 7