Fatal error: Uncaught Error: Class 'GraphQL\Executor\Promise\Adapter\SyncPromise' not found in /home/mpolsk5/public_html/seocomo/craft/vendor/webonyx/graphql-php/src/Deferred.php:9
Stack trace:
#0 {main}
thrown in /home/mpolsk5/public_html/seocomo/craft/vendor/webonyx/graphql-php/src/Deferred.php on line 9