ruby-on-rails - 升级到 rails 6.1.3 后，Active Storage 返回 403 错误

Question

升级到 rails 6.1.3 后，Aws 返回 403 错误image_tag @item.photos.first。所有变体都显示没有任何错误。

项目.rb

class Item < ApplicationRecord
  has_many_attached :photos, dependent: :destroy
end

items_controller

  def show
    @item = Item.find[params[:id]
  end

项目/show.html.erb

<% if @item.photos.attached?%>
            <%= image_tag(@item.photos.first,
              srcset: [
                        [url_for(photos_variants(@item.photos.first, 300, 180)), "375w"],
                        [url_for(photos_variants(@item.photos.first, 500, 300)), "512w"],
                        [url_for(photos_variants(@item.photos.first, 750, 450)), "768w"],
                        [url_for(photos_variants(@item.photos.first, 1000, 600)), "1024w"],
                        [url_for(photos_variants(@item.photos.first, 1500, 900)), "1980w"]
                      ],
              sizes: "100vw",
              alt: @item.name) %>
 <% end %>