Fix Undefined MethodError at app.assets.register_preprocessor for sprockets3 by suzan2go · Pull Request #112 · metaskills/less-rails

With Rails 4.2.5, I got an error below ( at rails c and rails s). /Users/suzuken/Documents/suzan2go/nasulog/vendor/bundle/ruby/2.2.0/gems/less-rails-2.7.0/lib/less/rails/railtie.rb:19:in `block in...