Exception in rendering!

Message: Cannot read property 'id' of null

TypeError: Cannot read property 'id' of null
    at <anonymous>:8760:60
    at <anonymous>:8764:16
    at RelatedContentsList.render (<anonymous>:8767:10)
    at ReactCompositeComponentWrapper._renderValidatedComponentWithoutOwnerOrContext (<anonymous>:128494:30)
    at ReactCompositeComponentWrapper._renderValidatedComponent (<anonymous>:128517:32)
    at ReactCompositeComponentWrapper.performInitialMount (<anonymous>:128057:30)
    at ReactCompositeComponentWrapper.mountComponent (<anonymous>:127953:21)
    at Object.mountComponent (<anonymous>:11376:35)
    at ReactDOMComponent.mountChildren (<anonymous>:131466:44)
    at ReactDOMComponent._createContentMarkup (<anonymous>:129372:32)