Ruby - 尝试访问数组中的数据时“无法将符号转换为整数”

Here's a sample of array:

这是一个数组示例:

{"C1"=>[
        {:upc=>"51857195821952", :product_id=>"1234", :name=>"name", :price=>"  ", :color=>"green", :size=>"L", :description=>"descr"},
        {:upc=>"352353wegs", :product_id=>"456", :name=>"name2", :price=>"", :color=>"black", :size=>"S", :description=>"descr"}, # ...
       ],
 #...
}
{"C1"=>