Exception in rendering!

Message: Cannot read property 'id' of null

TypeError: Cannot read property 'id' of null
    at <anonymous>:9386:60
    at <anonymous>:9390:16
    at RelatedContentsList.render (<anonymous>:9425:10)
    at ReactCompositeComponentWrapper._renderValidatedComponentWithoutOwnerOrContext (<anonymous>:128451:30)
    at ReactCompositeComponentWrapper._renderValidatedComponent (<anonymous>:128474:32)
    at ReactCompositeComponentWrapper.performInitialMount (<anonymous>:128014:30)
    at ReactCompositeComponentWrapper.mountComponent (<anonymous>:127910:21)
    at Object.mountComponent (<anonymous>:11070:35)
    at ReactDOMComponent.mountChildren (<anonymous>:131423:44)
    at ReactDOMComponent._createContentMarkup (<anonymous>:129329:32)