ActiveModel::MissingAttributeError: missing attribute: noteable_id

https://sentry.gitlab.net/gitlab/gitlabcom/issues/3017170/?referrer=gitlab_plugin

ActiveModel::MissingAttributeError: missing attribute: noteable_id
  app/models/discussion.rb:72:in `base_discussion_id'
    noteable_id = note.noteable_id || note.commit_id
  app/models/discussion.rb:68:in `build_discussion_id'
    [*base_discussion_id(note), SecureRandom.hex]
  app/models/discussion.rb:63:in `discussion_id'
    Digest::SHA1.hexdigest(build_discussion_id(note).join("-"))
  app/models/note.rb:636:in `derive_discussion_id'
    discussion_class.discussion_id(self)
  app/models/note.rb:632:in `ensure_discussion_id'
    self.discussion_id = derive_discussion_id
...
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