java.lang.NullPointerException: This exception has no message.

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java.lang.NullPointerException:
at java.util.Hashtable.put(Hashtable.java:459)
at java.util.Properties.setProperty(Properties.java:166)
at com.ligadata.MetadataAPI.ConfigUtils$.RefreshApiConfigForGivenNode(ConfigUtils.scala:1408)
at com.ligadata.MetadataAPI.MetadataAPIImpl$.LoadAllObjectsIntoCache(MetadataAPIImpl.scala:2888)
at com.ligadata.MetadataAPI.MetadataAPIImpl$.InitMdMgrFromBootStrap(MetadataAPIImpl.scala:4299)
at com.ligadata.MetadataAPI.StartMetadataAPI$.main(StartMetadataAPI.scala:349)
at com.ligadata.MetadataAPI.StartMetadataAPI.main(StartMetadataAPI.scala)

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