Query returning null in response

[reenaupadhyay]

Hi folks,

I am new to graphQl, I have implemented a sample project following the exact same steps and example given here
https://www.graphql-java.com/tutorials/getting-started-with-spring-boot/#sample-source-code
But while executing any valid query the data is coming as null in response. I added a logger in the BookController, bookById query method, but I found the request is not reaching in the method, but on the UI, I see 200 HTTP status return from the API with response as null.
I have not made any custom changes in the example shared.

Thank you.

[reenaupadhyay]

Duplicate of #3216