update uploader for shop code

app/uploaders/menu_item_image_uploader.rb

@@ -15,7 +15,7 @@ class MenuItemImageUploader < CarrierWave::Uploader::Base
   # Override the directory where uploaded files will be stored.
   # This is a sensible default for uploaders that are meant to be mounted:
   def store_dir
-    "image/menu_images/#{current_shop.shop_code}"
+    "image/menu_images/#{Shop.first.shop_code}"
     # "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
   end