NoMethodError: undefined method `fetch' for nil (NoMethodError)

[sue445]

https://sue445.sentry.io/share/issue/90a9b3def2814770b1093fbaaa5b874d/

NoMethodError: undefined method `fetch' for nil (NoMethodError)

        comment_owner_model = tx.xquery('SELECT * FROM users WHERE id = ?', livecomment_model.fetch(:user_id)).first
                                                                                             ^^^^^^
  app.rb:154:in `fill_livecomment_response'
    comment_owner_model = tx.xquery('SELECT * FROM users WHERE id = ?', livecomment_model.fetch(:user_id)).first
  app.rb:171:in `fill_livecomment_report_response'
    livecomment = fill_livecomment_response(tx, livecomment_model)
  app.rb:504:in `block (3 levels) in <class:App>'
    fill_livecomment_report_response(tx, report_model)
  app.rb:503:in `each'
    tx.xquery('SELECT * FROM livecomment_reports WHERE livestream_id = ?', livestream_id).map do |report_model|
  app.rb:503:in `map'
    tx.xquery('SELECT * FROM livecomment_reports WHERE livestream_id = ?', livestream_id).map do |report_model|
...
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