This issue is a follow up of the following bug JDK-8200724.
Brief description of the problem reported by JDK-8200724:
During initialisation of JNLP2Manager deploy code is unable to download the JNLP file due to unsuccessful SSL connection. As a result getLaunchDesc() returns null. So the app fails with NPE when it tries to retrieve app info.
It would be good to handle this situation more properly from the deploy side, (i.e. avoid NPE and throw an appropriate exception with clear reason of failure instead).