use uuid blobs controller

config/initializers/devise.rb

@@ -113,7 +113,7 @@ Devise.setup do |config|
   # This can reduce the time taken to boot the app but if your application
   # requires the Devise mappings to be loaded during boot time the application
   # won't boot properly.
-  # config.reload_routes = true
+  config.reload_routes = false
 
   # ==> Configuration for :database_authenticatable
   # For bcrypt, this is the cost for hashing the password and defaults to 12. If