o:socket in EJB class - I get a NPE in org.omnifaces.util.Messages - jsf

Question

I´m trying to send a push notification from my EJB class:
#Stateless
public class SendEmailNotificationReminderServiceBean implements SendEmailNotificationReminderService {
#Inject
private BeanManager beanManager;
private void sendNotification {
// Push Nachricht
PushEvent event = new PushEvent("sendNotification", 1);
beanManager.fireEvent(event);
}
}
Here my socket:
#Named
#ApplicationScoped
public class NotificationSocket implements Serializable {
private static final long serialVersionUID = 7615791377170410627L;
#Inject
#Push(channel = "notificationChannel")
private PushContext push;
/**
* Push Notification
*
* #param recipientUser
*/
public void pushUser(#Observes PushEvent event) {
if (event == null)
return;
Set<Future<Void>> sent = push.send(event.getMessage(), event.getUserId());
}
}
My object:
public class PushEvent {
private String message;
private Long userId;
public PushEvent(String message) {
super();
this.message = message;
}
//////////////
public PushEvent(String message, Long userId) {
super();
this.message = message;
this.userId = userId;
}
public String getMessage() {
return message;
}
public Long getUserId() {
return userId;
}
}
My JSF page:
<o:socket channel="notificationChannel"
user="#{loginBean.currentEmployee.id}" scope="session"
onmessage="notificationLoadScript">
</o:socket>
<h:form id="notificationPushTopbarForm">
<p:remoteCommand name="notificationLoadScript"
actionListener="#{topbarMenuController.loadNotification()}"
oncomplete="changeTitleForNotification(#{topbarMenuController.numberOfNewNotificationAvailable})"
update=":notificationLink, :notificationSidebarForm" global="false" />
</h:form>
What I´m trying to do is:
Create a PushNotification from my backend (EJB layer) to the current logged in User and this channel.
As example you can imagine the Notification icon (right corner) from Stackoverflow.
I´m getting no error message, but the JSF component is also not updating (p:remoteCommand call). Any idea how I can fix this?