class DynamicPaperclip::Railtie

Patch to avoid the following error : actionpack-5.1.4/lib/action_dispatch/middleware/stack.rb:35:in `build': undefined method `new' for “DynamicPaperclip::AttachmentStyleGenerator”:String (NoMethodError). Did you mean? next github.com/mbouchard/dynamic_paperclip/commit/ad6c209cdd08efb202140faaa6aa647987726409