============================================================================
| com.thoughtworks.xstream.converters.ConversionException: null : null
---- Debugging information ----
cause-exception     : java.lang.NullPointerException
cause-message       : null
class               : com.itko.lisa.vse.stateful.model.Request
required-type       : com.itko.lisa.vse.stateful.model.Request
converter-type      : com.itko.lisa.vse.stateful.model.converter.RequestConverter
path                : /com.itko.lisa.vse.stateful.model.Request/operation
line number         : 2
version             : 1.4.8
-------------------------------
============================================================================
| Step:        VS Image Response Selection
----------------------------------------------------------------------------
| Message:     null : null
---- Debugging information ----
cause-exception     : java.lang.NullPointerException
cause-message       : null
class               : com.itko.lisa.vse.stateful.model.Request
required-type       : com.itko.lisa.vse.stateful.model.Request
converter-type      : com.itko.lisa.vse.stateful.model.converter.RequestConverter
path                : /com.itko.lisa.vse.stateful.model.Request/operation
line number         : 2
version             : 1.4.8
-------------------------------
----------------------------------------------------------------------------
| Trapped Exception: null : null
---- Debugging information ----
cause-exception     : java.lang.NullPointerException
cause-message       : null
class               : com.itko.lisa.vse.stateful.model.Request
required-type       : com.itko.lisa.vse.stateful.model.Request
converter-type      : com.itko.lisa.vse.stateful.model.converter.RequestConverter
path                : /com.itko.lisa.vse.stateful.model.Request/operation
line number         : 2
version             : 1.4.8
-------------------------------
| Trapped Message:   com.thoughtworks.xstream.converters.ConversionException: null : null
---- Debugging information ----
cause-exception     : java.lang.NullPointerException
cause-message       : null
class               : com.itko.lisa.vse.stateful.model.Request
required-type       : com.itko.lisa.vse.stateful.model.Request
converter-type      : com.itko.lisa.vse.stateful.model.converter.RequestConverter
path                : /com.itko.lisa.vse.stateful.model.Request/operation
line number         : 2
version             : 1.4.8
-------------------------------
----------------------------------------------------------------------------
STACK TRACE
com.thoughtworks.xstream.converters.ConversionException: null : null
---- Debugging information ----
cause-exception     : java.lang.NullPointerException
cause-message       : null
class               : com.itko.lisa.vse.stateful.model.Request
required-type       : com.itko.lisa.vse.stateful.model.Request
converter-type      : com.itko.lisa.vse.stateful.model.converter.RequestConverter
path                : /com.itko.lisa.vse.stateful.model.Request/operation
line number         : 2
version             : 1.4.8
-------------------------------
	at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:79)
	at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65)
	at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66)
	at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:50)
	at com.thoughtworks.xstream.core.TreeUnmarshaller.start(TreeUnmarshaller.java:134)
	at com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.unmarshal(AbstractTreeMarshallingStrategy.java:32)
	at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:1206)
	at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:1190)
	at com.thoughtworks.xstream.XStream.fromXML(XStream.java:1061)
	at com.thoughtworks.xstream.XStream.fromXML(XStream.java:1052)
	at com.itko.lisa.vse.stateful.model.Streamer.fromXML(Streamer.java:92)
	at com.itko.lisa.vse.stateful.ConversationalStep.execute(ConversationalStep.java:453)
	at com.itko.lisa.test.TestNode.executeNode(TestNode.java:981)
	at com.itko.lisa.test.TestCase.execute(TestCase.java:1288)
	at com.itko.lisa.test.TestCase.execute(TestCase.java:1203)
	at com.itko.lisa.test.TestCase.executeNextNode(TestCase.java:1188)
	at com.itko.lisa.editor.WalkThruPanel.prepAndExecNode(WalkThruPanel.java:1058)
	at com.itko.lisa.editor.WalkThruPanel.access$900(WalkThruPanel.java:71)
	at com.itko.lisa.editor.WalkThruPanel$10.doCallback(WalkThruPanel.java:965)
	at com.itko.util.swing.panels.ProcessingDialog$2.run(ProcessingDialog.java:194)
	at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NullPointerException
	at com.itko.lisa.vse.stateful.model.converter.RequestConverter.unmarshallChildElements(RequestConverter.java:129)
	at com.itko.lisa.vse.stateful.model.converter.BodyCarrierConverter.unmarshal(BodyCarrierConverter.java:125)
	at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72)
	... 20 more
============================================================================