I'm trying to generate my Kubernetes manifests (deployment.yml and service.yml) using JKube via this command : mvn k8s:resource

But I'm getting this error :

[INFO] Scanning for projects...
[INFO] 
[INFO] -------------------< io.social.carpooling:trips-api >-------------------
[INFO] Building trips-api 0.0.1-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[INFO] 
[INFO] --- kubernetes-maven-plugin:1.1.1:resource (default-cli) @ trips-api ---
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 4.979 s
[INFO] Finished at: 2021-03-18T19:11:24+01:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.eclipse.jkube:kubernetes-maven-plugin:1.1.1:resource (default-cli) on project trips-api: Execution default-cli of goal org.eclipse.jkube:kubernetes-maven-plugin:1.1.1:resource failed.: NullPointerException -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginExecutionException

Here is what my pom.xml looks like :

<properties>
        ...
        <jkube.version>1.1.1</jkube.version>
        <jkube.generator.name>my-dockerhub-username/${project.artifactId}:${project.version}</jkube.generator.name>
        ...
</properties>
...
<plugin>
            <groupId>org.eclipse.jkube</groupId>
            <artifactId>kubernetes-maven-plugin</artifactId>
            <version>${jkube.version}</version>
            <configuration>
                <images>
                    <image>
                        <name>my-dockerhub-username/${project.artifactId}:${project.version}</name>
                    </image>
                </images>
            </configuration>
 </plugin>

I tried to get more details using the plugin documentation but I didn't found so much. Is there anyone who successfully generated the yaml files and deployed to Kubernetes cluster.