MethodInvocationException: Invocation of method 'getDisplayableLabel'

java.lang.RuntimeException: Error rendering template for decorator root
    at com.atlassian.confluence.setup.velocity.ApplyDecoratorDirective.render(ApplyDecoratorDirective.java:203)

caused by: java.lang.RuntimeException: Error rendering template for decorator page
    at com.atlassian.confluence.setup.velocity.ApplyDecoratorDirective.render(ApplyDecoratorDirective.java:203)

caused by: org.apache.velocity.exception.MethodInvocationException: Invocation of method 'getDisplayableLabel' in class com.atlassian.confluence.plugin.descriptor.web.model.ConfluenceWebLabel threw exception com.atlassian.core.exception.InfrastructureException: Error occurred rendering template content at template/includes/menu-macros.vm[line 137, column 36]
    at org.apache.velocity.runtime.parser.node.ASTMethod.handleInvocationException(ASTMethod.java:337)

caused by: com.atlassian.core.exception.InfrastructureException: Error occurred rendering template content
    at com.atlassian.confluence.util.velocity.VelocityUtils.getRenderedContent(VelocityUtils.java:123)

caused by: org.apache.velocity.exception.MethodInvocationException: Invocation of method 'getLatestVersionsOfAttachments' in class com.atlassian.confluence.pages.Page threw exception net.sf.hibernate.LazyInitializationException: Failed to lazily initialize a collection at getRenderedContent[line 1, column 15]
    at org.apache.velocity.runtime.parser.node.ASTMethod.handleInvocationException(ASTMethod.java:337)

caused by: net.sf.hibernate.LazyInitializationException: Failed to lazily initialize a collection
    at net.sf.hibernate.collection.PersistentCollection.initialize(PersistentCollection.java:201)

caused by: net.sf.hibernate.HibernateException: collection was evicted
    at net.sf.hibernate.impl.SessionImpl.initializeCollection(SessionImpl.java:3303)