The Problem
Recently, I wrote some GraphQL endpoints and got a bit blocked when I came to the error handling mechanism. Usually, when writing REST endpoints, you either go for a particular @ExceptionHandler for your controller or you go for the @ControllerAdvice to handle exceptions globally for multiple controllers. Apparently, that is not the case for GraphQL. There is a completely different approach for handling errors.
First, the most important thing that I should mention is that I am using: