Content -> Subscriptions -> Manage Manifest

When the org doesn't have a manifest imported this error appears in the console:

checkPropTypes.js:19 Warning: Failed prop type: The prop `action` is marked as required in `PrimaryActionButton`, but its value is `undefined`.
    in PrimaryActionButton (created by DefaultEmptyState)
    in DefaultEmptyState (created by Table)
    in Table (created by ManageManifestModal)
    in LoadingState (created by ManageManifestModal)
    in div (created by TabPane)
    in Transition (created by Fade)
    in Fade (created by TabPane)
    in TabPane (created by Tab)