Null container when instantiating concept from another concept in the sub-class

[hibahnaini]

Erorr: org.openflexo.foundation.fml.rt.FMLExecutionException: Cannot instanciate a FlexoConceptInstance : null FlexoConcept container
at org.openflexo.foundation.fml.rt.FMLRTVirtualModelInstanceModelFactory.makeNewFlexoConceptInstance(FMLRTVirtualModelInstanceModelFactory.java:132)
at org.openflexo.foundation.fml.rt.FMLRTVirtualModelInstance$FMLRTVirtualModelInstanceImpl.makeNewFlexoConceptInstance(FMLRTVirtualModelInstance.java:141)
at org.openflexo.foundation.fml.rt.action.AbstractCreationSchemeAction.doAction(AbstractCreationSchemeAction.java:175)
at org.openflexo.foundation.fml.rt.action.CreationSchemeAction.doAction(CreationSchemeAction.java:118)
at org.openflexo.foundation.action.FlexoAction.doActionInContext(FlexoAction.java:271)
at org.openflexo.view.controller.InteractiveFlexoEditor.runAction(InteractiveFlexoEditor.java:224)
at org.openflexo.view.controller.InteractiveFlexoEditor.doExecuteAction(InteractiveFlexoEditor.java:191)
at org.openflexo.view.controller.InteractiveFlexoEditor.executeAction(InteractiveFlexoEditor.java:181)
at org.openflexo.view.controller.InteractiveFlexoEditor.performAction(InteractiveFlexoEditor.java:141)
at org.openflexo.foundation.action.FlexoAction.doAction(FlexoAction.java:231)

BugTest.zip