Exception in rendering!

Message: Cannot read property 'id' of null

TypeError: Cannot read property 'id' of null
    at <anonymous>:64579:63
    at <anonymous>:64584:26
    at <anonymous>:64684:20
    at Array.map (<anonymous>)
    at SearchSidebar.render (<anonymous>:64499:35)
    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)