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java.lang.NullPointerException: 	at com.enosysmarkets.querybuilder.configuration.PipeSignature.createPipeSignatureParams(UnknownSource)	at com.enosysmarkets.querybuilder.configuration.PipeSignature.(UnknownSource)	at com.enosysmarkets.querybuilder.client.DefaultMediatorMetaDataImpl.buildFunctionFactories(UnknownSource)	at com.enosysmarkets.querybuilder.client.DefaultMediatorMetaDataImpl.(UnknownSource)	at com.enosysmarkets.querybuilder.client.DefaultMediatorConnectionImpl.getMediatorMetaData(UnknownSource)	at com.enosysmarkets.querybuilder.client.ConnectionManager.updateMediatorMetaData(UnknownSource)	at com.enosysmarkets.querybuilder.client.ConnectionManager.setConnection(UnknownSource)	at com.enosysmarkets.querybuilder.gui.component.widget.LoginDialog.connect(UnknownSource)	at com.enosysmarkets.querybuilder.gui.control.action.widget.CreateConnectionAction.connectToMediator(UnknownSource)	at com.enosysmarkets.querybuilder.gui.control.action.widget.CreateConnectionAction.actionPerformed(UnknownSource)	at com.enosysmarkets.querybuilder.gui.Application.(UnknownSource)	at com.enosysmarkets.querybuilder.gui.Application.main(UnknownSource)