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    Thrown when an application is trying to use or access an object whose reference equals to null. You are probably trying to use a reference that points to no location in memory as though it were referencing an object.

java.lang.NullPointerException: null	at java.util.Hashtable.put(Hashtable.java:459)	at org.openhab.core.internal.events.EventPublisherImpl.createUpdateEvent(EventPublisherImpl.java:86)	at org.openhab.core.internal.events.EventPublisherImpl.postUpdate(EventPublisherImpl.java:78)	at org.openhab.binding.astro.internal.job.ItemJob.executeJob(ItemJob.java:25)	at org.openhab.binding.astro.internal.job.AbstractBaseJob.execute(AbstractBaseJob.java:45)