After updating springboot from version 2 to 3.1.4, all the tests are failing because autowired fields(myService) in all my test classes are null. This is throwing null pointer exceptions.

I have a springboot application with a Service class:

@Service
@Slf4j
public class MyService extends MyRepository {

    private final AnotherService anotherService;

    public MyService(AnotherService anotherService) {
        this.anotherService= anotherService;
    }
//more functions
}

I’ve written groovy tests for the functions in this class:

@SpringBootTest(classes = Application)
class MyServiceSpec extends Specification {

    @Autowired
    private MyService myService

    def "MyService(test=function1)"() {
        // some test code
    }
}

I tried solutions posted online like checking annotations, dependencies, etc, but it is not working. How can I make sure the application context loads correctly?