rotaie errore method_missing ': metodo non definito `questo' per Gem :: Specification

seguo questo tutorial: https://guides.spreecommerce.com/developer/getting_started_tutorial.html#installing-image-magick Quando scrivorotaie errore method_missing ': metodo non definito `questo' per Gem :: Specification

[email protected]:~/rails_projects/optima1$ spree install --auto-accept

ho ottenuto questo:

/home/jonstark/.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/rubygems/specification.rb:2158:in 
`method_missing': undefined method `this' for 
#<Gem::Specification:0x4db6d12 activesupport-4.2.0> (NoMethodError)  from 
/home/jonstark/.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/rubygems/specification.rb:1057:in 
`find_active_stub_by_path' from 
/home/jonstark/.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:64:in 
`require' from 
/home/jonstark/.rvm/gems/ruby-2.3.0/gems/activesupport-4.2.0/lib/active_support/core_ext/string.rb:1:in 
`<top (required)>' from 
/home/jonstark/.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:127:in 
`require' from 
/home/jonstark/.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:127:in 
`rescue in require'  from 
/home/jonstark/.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:40:in 
`require' from 
/home/jonstark/.rvm/gems/ruby-2.3.0/gems/spree_cmd-3.0.6.1/lib/spree_cmd/installer.rb:2:in 
`<top (required)>' from 
/home/jonstark/.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in 
`require' from 
/home/jonstark/.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in 
`require' from 
/home/jonstark/.rvm/gems/ruby-2.3.0/gems/spree_cmd-3.0.6.1/lib/spree_cmd.rb:13:in 
`<top (required)>' from 
/home/jonstark/.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in 
`require' from 
/home/jonstark/.rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in 
`require' from 
/home/jonstark/.rvm/gems/ruby-2.3.0/gems/spree_cmd-3.0.6.1/bin/spree:2:in 
`<top (required)>' from 
/home/jonstark/.rvm/gems/ruby-2.3.0/bin/spree:23:in `load' from 
/home/jonstark/.rvm/gems/ruby-2.3.0/bin/spree:23:in `<main>' from 
/home/jonstark/.rvm/gems/ruby-2.3.0/bin/ruby_executable_hooks:15:in 
`eval' from 
/home/jonstark/.rvm/gems/ruby-2.3.0/bin/ruby_executable_hooks:15:in 
`<main>'

mio Gemfile

source 'https://rubygems.org' 
ruby '2.3.0' 
#ruby-gemset=railstutorial_rails_4_0 

gem 'rails', '4.2' 
gem 'bootstrap-sass' 
gem 'sprockets' 
gem 'bcrypt-ruby' 
gem 'faker' 
gem 'will_paginate' 
gem 'bootstrap-will_paginate' 
gem 'ffaker' 
gem 'carrierwave', '~> 0.9' 
gem "font-awesome-rails" 
gem 'sprockets-rails' 
gem 'rest-client' 
gem 'blogo' 
gem 'fog' 
gem 'carrierwave-aws' 
gem "figaro" 

group :development, :test do 
    gem 'sqlite3' 
    gem 'rspec-rails' 
end 

group :test do 
    gem 'selenium-webdriver' 
    gem 'capybara' 
    gem 'factory_girl_rails' 

end 


gem 'sass-rails' 
gem 'uglifier' 
gem 'coffee-rails' 
gem 'jquery-rails' 
gem 'turbolinks' 
gem 'jbuilder' 

group :doc do 
    gem 'sdoc', '0.3.20', require: false 
end 

group :production do 
    gem 'pg' 
    gem 'rails_12factor' 
    gem 'heroku-deflater' 
# gem 'unicorn' 
end

AGGIORNAMENTO: Ho creato un problema di github qui https://github.com/spree/spree/issues/7104 e mi hanno legato a qui https://github.com/rubygems/rubygems/issues/1420

Ma io ancora non so come risolvere il mio problema

fonte

2016-02-22 user2950593