Exception in rendering!

Message: Cannot read property 'id' of null

TypeError: Cannot read property 'id' of null
    at <anonymous>:8605:59
    at <anonymous>:8609:16
    at RelatedContentsList.render (<anonymous>:8612:10)
    at ReactCompositeComponentWrapper._renderValidatedComponentWithoutOwnerOrContext (<anonymous>:113499:30)
    at ReactCompositeComponentWrapper._renderValidatedComponent (<anonymous>:113522:32)
    at ReactCompositeComponentWrapper.performInitialMount (<anonymous>:113062:30)
    at ReactCompositeComponentWrapper.mountComponent (<anonymous>:112958:21)
    at Object.mountComponent (<anonymous>:11409:35)
    at ReactDOMComponent.mountChildren (<anonymous>:116375:44)
    at ReactDOMComponent._createContentMarkup (<anonymous>:114260:32)