Unsatisfied Dependency Error: com.iiit.quarkus.sample.rest.service.ProjectService in Quarkus

The error message 'Unsatisfied dependency for type com.iiit.quarkus.sample.rest.service.ProjectService and qualifiers [@Default]' indicates a problem with dependency injection for the 'ProjectService' class in your Quarkus application. This usually happens when the 'ProjectService' class is not properly annotated for injection.

Here's how to troubleshoot and fix this error:

1. Add the '@Inject' Annotation: Ensure that the 'ProjectService' class has the '@Inject' annotation. This marks it as a bean eligible for injection into other classes.

2. Check Classpath and Dependencies: Verify that your classpath is configured correctly and that all required dependencies are included. Use Maven or Gradle to manage your dependencies efficiently.

3. Verify Package Name: Make sure the package name for the 'ProjectService' class matches the location of the class file within your project.

4. Default Constructor: Confirm that the 'ProjectService' class has a default constructor. If no constructors are explicitly defined, the compiler provides a default one.

5. Check for Conflicts: Investigate if other injection points in your code might be interfering with the injection of the 'ProjectService' class.

By following these steps, you should be able to resolve the 'Unsatisfied dependency for type com.iiit.quarkus.sample.rest.service.ProjectService and qualifiers [@Default]' error and successfully inject the 'ProjectService' class into your Quarkus application.