Just deploy the sample app and find this in log:
Can anyone assist
Thanks
org.apache.myfaces.application.viewstate.ServerSideStateCacheImpl serializeView
SEVERE: Exiting serializeView - Could not serialize state: org.primefaces.adamantium.service.DocumentService
java.io.NotSerializableException: org.primefaces.adamantium.service.DocumentService
at java.io.ObjectOutputStream.writeObject0(Unknown Source)