ActiveRecord::RecordNotFound in PublicController#prod

Couldn't find Product with 'id'=blog_single_image

Extracted source (around line #48):
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def prod #商品內頁,推薦商品
@ContentFour = Content.find(4)
@Product = Product.find(params[:id])
@ProductImage = ProductImage.mark.order("rank ASC").where(:product_id => @Product)
@ProductRecommChooseKey = Product.mark.where(:product_category_id => @Product.product_category_id, :recomm_choose => 2)#.limit(3) #商品[推薦]分類 => 2
end

Rails.root: /home/usanwang/www/buns

Application Trace | Framework Trace | Full Trace

Request

Parameters:

{"id"=>"blog_single_image",
 "format"=>"html"}

Response

Headers:

None