uninitialized constant Sass :: Plugin

Question

Я получил эту ошибку, если попытаюсь нажать на Heroku. На производстве все работает отлично.

Если я запускаю «rake assets: precompile» на разработку, он отлично работает. Когда Heroku делает это, он не в состоянии

Heroku Журналы

/app/vendor/bundle/ruby/2.0.0/bundler/gems/active_admind9c593b13a6f/lib/active_admin/application.rb:258:in `generate_stylesheets': uninitialized constant Sass::Plugin 



source 'https://rubygems.org' 
ruby '2.0.0' 

# Bundle edge Rails instead: gem 'rails', github: 'rails/rails' 
gem 'rails', '4.0.0' 

# Use postgresql as the database for Active Record 
gem 'pg' 

# Use SCSS for stylesheets 
gem 'sass-rails', '~> 4.0.0' 

# Use Uglifier as compressor for JavaScript assets 
gem 'uglifier', '>= 1.3.0' 

# Use CoffeeScript for .js.coffee assets and views 
gem 'coffee-rails', '~> 4.0.0' 


# Use jquery as the JavaScript library 
gem 'jquery-rails', '~> 2.3.0' 

# Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks 
gem 'turbolinks' 

# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder 
gem 'jbuilder', '~> 1.0.1' 

group :doc do 
    # bundle exec rake doc:rails generates the API under doc/api. 
    gem 'sdoc', require: false 
end 

gem 'protected_attributes' 
gem 'devise',    github: 'plataformatec/devise',  branch: 'rails4' 
gem 'responders'  , github: 'plataformatec/responders' 
gem 'inherited_resources', github: 'josevalim/inherited_resources' 
gem 'ransack',    github: 'ernie/ransack',   branch: 'rails-4' 
gem 'activeadmin',   github: 'akashkamboj/active_admin', branch: 'rails4' 


gem "cancan" 
gem 'omniauth' 
gem 'omniauth-facebook' 

gem 'carrierwave' 

Answer 1

gem 'activeadmin', github: 'gregbell/active_admin', branch: 'rails4'