2016-06-17 10:05:39,188 ERROR ization.templating.VariantAwareTemplatingFunctions: Can't unwrap variant.
javax.jcr.ItemNotFoundException: Root node doesn't have a parent
	at org.apache.jackrabbit.core.NodeImpl$6.perform(NodeImpl.java:1754)
	at org.apache.jackrabbit.core.NodeImpl$6.perform(NodeImpl.java:1747)
	at org.apache.jackrabbit.core.session.SessionState.perform(SessionState.java:216)
	at org.apache.jackrabbit.core.ItemImpl.perform(ItemImpl.java:91)
	at org.apache.jackrabbit.core.NodeImpl.getParent(NodeImpl.java:1747)
	at info.magnolia.jcr.wrapper.DelegateNodeWrapper.getParent(DelegateNodeWrapper.java:494)
	at info.magnolia.jcr.decoration.ContentDecoratorNodeWrapper.getParent(ContentDecoratorNodeWrapper.java:121)
	at info.magnolia.jcr.wrapper.DelegateNodeWrapper.getParent(DelegateNodeWrapper.java:494)
	at info.magnolia.jcr.decoration.ContentDecoratorNodeWrapper.getParent(ContentDecoratorNodeWrapper.java:121)
	at info.magnolia.jcr.wrapper.DelegateNodeWrapper.getParent(DelegateNodeWrapper.java:494)
	at info.magnolia.jcr.decoration.ContentDecoratorNodeWrapper.getParent(ContentDecoratorNodeWrapper.java:121)
	at info.magnolia.jcr.wrapper.DelegateNodeWrapper.getParent(DelegateNodeWrapper.java:494)
	at info.magnolia.jcr.decoration.ContentDecoratorNodeWrapper.getParent(ContentDecoratorNodeWrapper.java:121)
	at info.magnolia.jcr.wrapper.DelegateNodeWrapper.getParent(DelegateNodeWrapper.java:494)
	at info.magnolia.jcr.decoration.ContentDecoratorNodeWrapper.getParent(ContentDecoratorNodeWrapper.java:121)
	at info.magnolia.personalization.decoration.PersonalizationNodeWrapper.getParent(PersonalizationNodeWrapper.java:158)
	at info.magnolia.personalization.templating.VariantAwareTemplatingFunctions.getVariantOriginNode(VariantAwareTemplatingFunctions.java:71)
	at info.magnolia.personalization.templating.VariantAwareTemplatingFunctions.linkPrefix(VariantAwareTemplatingFunctions.java:60)

FreeMarker template error:
An error has occurred when reading existing sub-variable "username"; see cause exception! The type of the containing value was: extended_hash+string (info.magnolia.demo.travel.model.NavigationAreaModel wrapped into f.e.b.StringModel)
....
Caused by: java.lang.NullPointerException
	at info.magnolia.rendering.template.type.TemplateTypeHelper.getContentListByTemplateIds(TemplateTypeHelper.java:227)
	at info.magnolia.personalization.templating.VariantAwareTemplateTypeHelper.getContentListByTemplateIds(VariantAwareTemplateTypeHelper.java:54)
	at info.magnolia.templating.functions.TemplatingFunctions.contentListByTemplateIds(TemplatingFunctions.java:1271)
	at info.magnolia.demo.travel.user.DefaultUserLinksResolver.findPage(DefaultUserLinksResolver.java:105)
	at info.magnolia.demo.travel.user.DefaultUserLinksResolver.useForCurrentPage(DefaultUserLinksResolver.java:75)
	at info.magnolia.demo.travel.model.NavigationAreaModel.getUserLinksResolver(NavigationAreaModel.java:174)
	at info.magnolia.demo.travel.model.NavigationAreaModel.getUsername(NavigationAreaModel.java:136)