ruby - Error when running rails server for the first time in a new dev environment -

-

i trying run 

rails server

for first time in new dev environment (os x) , getting following error:

=> booting webrick => rails 4.0.0 application starting in development on http://0.0.0.0:3000 => run `rails server -h` more startup options => ctrl-c shutdown server exiting /users/me/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/railties-4.0.0/lib/rails/railtie/configuration.rb:95:in `method_missing': undefined method `action_mailer' #<rails::application::configuration:0x007fe4fe066c70> (nomethoderror) /users/me/me/rails_projects/first_app/config/environments/development.rb:17:in `block in <top (required)>' /users/me/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/railties-4.0.0/lib/rails/railtie/configurable.rb:24:in `class_eval' /users/me/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/railties-4.0.0/lib/rails/railtie/configurable.rb:24:in `configure' /users/me/me/rails_projects/first_app/config/environments/development.rb:1:in `<top (required)>' /users/me/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:228:in `require' /users/me/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:228:in `block in require' /users/me/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:213:in `load_dependency' /users/me/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/activesupport-4.0.0/lib/active_support/dependencies.rb:228:in `require' /users/me/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/railties-4.0.0/lib/rails/engine.rb:591:in `block (2 levels) in <class:engine>' /users/me/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/railties-4.0.0/lib/rails/engine.rb:590:in `each' /users/me/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/railties-4.0.0/lib/rails/engine.rb:590:in `block in <class:engine>' /users/me/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/railties-4.0.0/lib/rails/initializable.rb:30:in `instance_exec' /users/me/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/railties-4.0.0/lib/rails/initializable.rb:30:in `run' /users/me/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/railties-4.0.0/lib/rails/initializable.rb:55:in `block in run_initializers' /users/me/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:150:in `block in tsort_each' /users/me/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:183:in `block (2 levels) in each_strongly_connected_component' /users/me/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:210:in `block (2 levels) in each_strongly_connected_component_from' /users/me/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:219:in `each_strongly_connected_component_from' /users/me/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:209:in `block in each_strongly_connected_component_from' /users/me/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/railties-4.0.0/lib/rails/initializable.rb:44:in `each' /users/me/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/railties-4.0.0/lib/rails/initializable.rb:44:in `tsort_each_child' /users/me/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:203:in `each_strongly_connected_component_from' /users/me/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:182:in `block in each_strongly_connected_component' /users/me/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:180:in `each' /users/me/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:180:in `each_strongly_connected_component' /users/me/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/tsort.rb:148:in `tsort_each' /users/me/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/railties-4.0.0/lib/rails/initializable.rb:54:in `run_initializers' /users/me/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/railties-4.0.0/lib/rails/application.rb:215:in `initialize!' /users/me/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/railties-4.0.0/lib/rails/railtie/configurable.rb:30:in `method_missing' /users/me/me/rails_projects/first_app/config/environment.rb:5:in `<top (required)>' /users/me/me/rails_projects/first_app/config.ru:3:in `require' /users/me/me/rails_projects/first_app/config.ru:3:in `block in <main>' /users/me/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/rack-1.5.2/lib/rack/builder.rb:55:in `instance_eval' /users/me/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/rack-1.5.2/lib/rack/builder.rb:55:in `initialize' /users/me/me/rails_projects/first_app/config.ru:in `new' /users/me/me/rails_projects/first_app/config.ru:in `<main>' /users/me/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/rack-1.5.2/lib/rack/builder.rb:49:in `eval' /users/me/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/rack-1.5.2/lib/rack/builder.rb:49:in `new_from_string' /users/me/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/rack-1.5.2/lib/rack/builder.rb:40:in `parse_file' /users/me/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/rack-1.5.2/lib/rack/server.rb:277:in `build_app_and_options_from_config' /users/me/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/rack-1.5.2/lib/rack/server.rb:199:in `app' /users/me/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/railties-4.0.0/lib/rails/commands/server.rb:48:in `app' /users/me/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/rack-1.5.2/lib/rack/server.rb:314:in `wrapped_app' /users/me/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/railties-4.0.0/lib/rails/commands/server.rb:75:in `start' /users/me/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/railties-4.0.0/lib/rails/commands.rb:78:in `block in <top (required)>' /users/me/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/railties-4.0.0/lib/rails/commands.rb:73:in `tap' /users/me/.rvm/gems/ruby-2.0.0-p247@railstutorial_rails_4_0/gems/railties-4.0.0/lib/rails/commands.rb:73:in `<top (required)>' bin/rails:4:in `require' bin/rails:4:in `<main>'

any appreciated, thanks!

source 'https://rubygems.org' ruby '2.0.0' #ruby-gemset=railstutorial_rails_4_0  group :development   gem 'sqlite3', '1.3.7' end  gem 'sass-rails', '4.0.0' gem 'uglifier', '2.1.1' gem 'coffee-rails', '4.0.0' gem 'jquery-rails', '2.2.1' gem 'turbolinks', '1.1.1' gem 'jbuilder', '1.0.2'  group :doc   gem 'sdoc', '0.3.20', require: false end  # use activemodel has_secure_password # gem 'bcrypt-ruby', '~> 3.0.0'  # use unicorn app server # gem 'unicorn'  # use capistrano deployment # gem 'capistrano', group: :development  # use debugger # gem 'debugger', group: [:development, :test]

comment following line in application.rb

# require 'active_resource/railtie'

its no longer required in rails 4.

still can use it, using gem


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