With a simple Gemfile

******************************
source 'https://rubygems.org'


gem "rails", "~> 5.0.0"
gem "pg", "~> 0.18"
gem "devise", "~> 4.2.0"

group :development, :test do
  gem "byebug"
end

group :development do
  gem "web-console"
  gem "listen"
  gem "spring"
  gem "spring-watcher-listen"
end
***************

LoadError: cannot load such file -- json

on a fresh rails project

and on Docker

***********************************************************
/usr/local/share/gems/gems/activesupport-5.0.0/lib/active_support/core_ext/object/json.rb:2:in `require': cannot load such file -- json (LoadError)
    from /usr/local/share/gems/gems/activesupport-5.0.0/lib/active_support/core_ext/object/json.rb:2:in `<top (required)>'
    from /usr/local/share/gems/gems/activesupport-5.0.0/lib/active_support/core_ext/object.rb:11:in `require'
    from /usr/local/share/gems/gems/activesupport-5.0.0/lib/active_support/core_ext/object.rb:11:in `<top (required)>'
    from /usr/local/share/gems/gems/railties-5.0.0/lib/rails/configuration.rb:2:in `require'
    from /usr/local/share/gems/gems/railties-5.0.0/lib/rails/configuration.rb:2:in `<top (required)>'
    from /usr/local/share/gems/gems/railties-5.0.0/lib/rails/railtie/configuration.rb:1:in `require'
    from /usr/local/share/gems/gems/railties-5.0.0/lib/rails/railtie/configuration.rb:1:in `<top (required)>'
    from /usr/local/share/gems/gems/railties-5.0.0/lib/rails/railtie.rb:216:in `require'
    from /usr/local/share/gems/gems/railties-5.0.0/lib/rails/railtie.rb:216:in `config'
    from /usr/local/share/gems/gems/railties-5.0.0/lib/rails/railtie.rb:122:in `config'
    from /usr/local/share/gems/gems/activesupport-5.0.0/lib/active_support/i18n_railtie.rb:7:in `<class:Railtie>'
    from /usr/local/share/gems/gems/activesupport-5.0.0/lib/active_support/i18n_railtie.rb:6:in `<module:I18n>'
    from /usr/local/share/gems/gems/activesupport-5.0.0/lib/active_support/i18n_railtie.rb:5:in `<top (required)>'
    from /usr/local/share/gems/gems/activesupport-5.0.0/lib/active_support/railtie.rb:2:in `require'
    from /usr/local/share/gems/gems/activesupport-5.0.0/lib/active_support/railtie.rb:2:in `<top (required)>'
    from /usr/local/share/gems/gems/railties-5.0.0/lib/rails.rb:14:in `require'
    from /usr/local/share/gems/gems/railties-5.0.0/lib/rails.rb:14:in `<top (required)>'
    from /usr/local/share/gems/gems/bundler-1.12.5/lib/bundler/runtime.rb:86:in `require'
    from /usr/local/share/gems/gems/bundler-1.12.5/lib/bundler/runtime.rb:86:in `block (2 levels) in require'
    from /usr/local/share/gems/gems/bundler-1.12.5/lib/bundler/runtime.rb:81:in `each'
    from /usr/local/share/gems/gems/bundler-1.12.5/lib/bundler/runtime.rb:81:in `block in require'
    from /usr/local/share/gems/gems/bundler-1.12.5/lib/bundler/runtime.rb:70:in `each'
    from /usr/local/share/gems/gems/bundler-1.12.5/lib/bundler/runtime.rb:70:in `require'
    from /usr/local/share/gems/gems/bundler-1.12.5/lib/bundler/inline.rb:60:in `gemfile'
    from /tmp/test.rb:8:in `<main>'





2016-07-05 13:46 GMT+02:00 Dominic Cleal <dominic@cleal.org>:
On 05/07/16 12:41, Marwan Rabbâa wrote:
> I have the same error with this package

And what error's that precisely?

--
Dominic Cleal
dominic@cleal.org
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