If you're using Spring Boot to manage versions of dependencies then it could be that it's pulling in version 18.3 of graphql-java instead of version 19.1. To override this version you should add the following in your Gradle build file:

ext["graphql-java.version"] = 19.1

Breaking changes

• removed deprecated asyncModeEnabled and asyncTimeout properties

📦 Dependencies

• upgrade graphql-java to v19.1
• upgrade graphql-java-servlet to v14.0.0
• upgrade graphql-java-tools to v13.0.0