Exception in rendering!

Message: Cannot read property 'id' of null

TypeError: Cannot read property 'id' of null
    at <anonymous>:9413:60
    at <anonymous>:9417:16
    at RelatedContentsList.render (<anonymous>:9420:10)
    at ReactCompositeComponentWrapper._renderValidatedComponentWithoutOwnerOrContext (<anonymous>:128343:30)
    at ReactCompositeComponentWrapper._renderValidatedComponent (<anonymous>:128366:32)
    at ReactCompositeComponentWrapper.performInitialMount (<anonymous>:127906:30)
    at ReactCompositeComponentWrapper.mountComponent (<anonymous>:127802:21)
    at Object.mountComponent (<anonymous>:11065:35)
    at ReactDOMComponent.mountChildren (<anonymous>:131315:44)
    at ReactDOMComponent._createContentMarkup (<anonymous>:129221:32)