The class org.picketlink.http.internal.PicketLinkServletContextListener is annotated with an invalid scope

The class org.picketlink.http.internal.PicketLinkServletContextListener is annotated with an invalid scope

@ApplicationScoped
@WebListener
public class PicketLinkServletContextListener implements ServletContextListener

Declaring CDI scopes for listeners, servlets or filters is not allowed!

You need to refactor and extract the listener related logic into a separate class.