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java.lang.NullPointerException: 	at org.drools.core.command.runtime.rule.GetObjectCommand.getFactHandleFromString(GetObjectCommand.java:66)	at org.drools.core.command.runtime.rule.GetObjectCommand$JaxbAccessorM_getFactHandleFromString_setFactHandleFromString_java_lang_String.get(MethodAccessor_Ref.java:41)	at com.sun.xml.internal.bind.v2.runtime.reflect.TransducedAccessor$CompositeTransducedAccessorImpl.print(TransducedAccessor.java:224)	at com.sun.xml.internal.bind.v2.runtime.property.AttributeProperty.serializeAttributes(AttributeProperty.java:86)	at com.sun.xml.internal.bind.v2.runtime.ClassBeanInfoImpl.serializeAttributes(ClassBeanInfoImpl.java:368)	at com.sun.xml.internal.bind.v2.runtime.XMLSerializer.childAsXsiType(XMLSerializer.java:674)	at com.sun.xml.internal.bind.v2.runtime.property.ArrayElementNodeProperty.serializeItem(ArrayElementNodeProperty.java:54)	at com.sun.xml.internal.bind.v2.runtime.property.ArrayElementProperty.serializeListBody(ArrayElementProperty.java:157)	at com.sun.xml.internal.bind.v2.runtime.property.ArrayERProperty.serializeBody(ArrayERProperty.java:144)	at com.sun.xml.internal.bind.v2.runtime.ClassBeanInfoImpl.serializeBody(ClassBeanInfoImpl.java:345)	at com.sun.xml.internal.bind.v2.runtime.XMLSerializer.childAsSoleContent(XMLSerializer.java:578)	at com.sun.xml.internal.bind.v2.runtime.ClassBeanInfoImpl.serializeRoot(ClassBeanInfoImpl.java:326)	at com.sun.xml.internal.bind.v2.runtime.XMLSerializer.childAsRoot(XMLSerializer.java:479)	at com.sun.xml.internal.bind.v2.runtime.MarshallerImpl.write(MarshallerImpl.java:308)	at com.sun.xml.internal.bind.v2.runtime.MarshallerImpl.marshal(MarshallerImpl.java:236)	at javax.xml.bind.helpers.AbstractMarshallerImpl.marshal(AbstractMarshallerImpl.java:116)	at org.kie.server.api.marshalling.jaxb.JaxbMarshaller.marshall(JaxbMarshaller.java:185)	at twsp.resources.KieServerClient2.fireRules(KieServerClient2.java:70)