How to integrate custom PhaseListener in faces-config.xml?

I want to implement a custom PhaseListener in my faces-config.xml like it is suggested at stack overflow. So this is my faces-config.xml:

<lifecycle>
        <phase-listener>org.apache.myfaces.extensions.validator.core.startup.ExtValStartupListener</phase-listener>
        <phase-listener>org.apache.myfaces.extensions.validator.beanval.startup.JSF2AwareBeanValidationStartupListener</phase-listener>
        <phase-listener>org.apache.myfaces.extensions.validator.beanval.startup.BeanValidationStartupListener</phase-listener>
        <phase-listener>de.azt.MyPhaseListener</phase-listener>
</lifecycle>

And this is MyPhaseListener-Dummy:

public class MyPhaseListener implements PhaseListener {

    @Override
    public PhaseId getPhaseId() {
        return PhaseId.RENDER_RESPONSE;
    }

    @Override
    public void beforePhase(PhaseEvent event) {
        // Do your job here which should run right before the RENDER_RESPONSE.
    }

    @Override
    public void afterPhase(PhaseEvent event) {
        // Do your job here which should run right after the RENDER_RESPONSE.
    }

}

But this approach leads the application server to crash:

HTTP Status 500 - serialFactory

type Exception report

message serialFactory

description The server encountered an internal error that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: serialFactory
    javax.faces.webapp.FacesServlet.service(FacesServlet.java:229)
    org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:79)
    ch.ivyteam.ivy.dialog.execution.jsf.controller.rest.IvyRestServiceFilter.doFilter(IvyRestServiceFilter.java:54)
    ch.ivyteam.ivy.dialog.execution.jsf.controller.IvyFacesInstanceFilter.filterAsSystem(IvyFacesInstanceFilter.java:104)
    ch.ivyteam.ivy.dialog.execution.jsf.controller.IvyFacesInstanceFilter.access$0(IvyFacesInstanceFilter.java:79)
    ch.ivyteam.ivy.dialog.execution.jsf.controller.IvyFacesInstanceFilter$1.call(IvyFacesInstanceFilter.java:55)
    ch.ivyteam.ivy.dialog.execution.jsf.controller.IvyFacesInstanceFilter$1.call(IvyFacesInstanceFilter.java:1)
    ch.ivyteam.ivy.security.internal.SecurityManager.executeAsSystem(SecurityManager.java:1425)

So how is it possible to implement a custom PhaseListener?