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if (function_exists('bcn_display')) {
  function theme_remove_news_from_trail_on_404($trail) {
    if ( is_404() ) {
      unset($trail->trail[1]);
      array_keys($trail->trail);
    }
  }

  add_action('bcn_after_fill', 'theme_remove_news_from_trail_on_404');
}