deviseを利用可能な状態にできない

Question

bundleでgemをインストールした後
rails g devise:installをしたら

teishimaryouta-no-MacBook-Air:gatebook ryota$ rails g devise:install
Running via Spring preloader in process 9058
Could not find generator 'devise:install'. Maybe you meant 'assets', 'generator' or 'coffee:assets'
Run rails generate --help for more options.
teishimaryouta-no-MacBook-Air:datebook ryota$

と出て、deviseがインストールできない。
gemには
gem 'devise', '~> 4.2'
と書き込んだ。
どうしたらいいですか。

バージョンに関して。
rails -v
Rails 5.0.0.1
teishimaryouta-no-MacBook-Air:gatebook ryota$
teishimaryouta-no-MacBook-Air:gatebook ryota$ gem -v
2.5.1
teishimaryouta-no-MacBook-Air:gatebook ryota$

以下gemfile

source 'https://rubygems.org'

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

gem 'rails', '~> 5.0.0', '>= 5.0.0.1'

gem 'devise', '~> 4.2'

Use sqlite3 as the database for Active Record

gem 'sqlite3'

Use Puma as the app server

gem 'puma', '~> 3.0'

Use SCSS for stylesheets

gem 'sass-rails', '~> 5.0'

Use Uglifier as compressor for JavaScript assets

gem 'uglifier', '>= 1.3.0'

Use CoffeeScript for .coffee assets and views

gem 'coffee-rails', '~> 4.2'

See https://github.com/rails/execjs#readme for more supported runtimes

gem 'therubyracer', platforms: :ruby

Use jquery as the JavaScript library

gem 'jquery-rails'

Turbolinks makes navigating your web application faster. Read more: https://github.com/turbolinks/turbolinks

gem 'turbolinks', '~> 5'

Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder

gem 'jbuilder', '~> 2.5'

Use Redis adapter to run Action Cable in production

gem 'redis', '~> 3.0'

Use ActiveModel has_secure_password

gem 'bcrypt', '~> 3.1.7'

Use Capistrano for deployment

gem 'capistrano-rails', group: :development

group :development, :test do

Call 'byebug' anywhere in the code to stop execution and get a debugger console

gem 'byebug', platform: :mri
end

group :development do

Access an IRB console on exception pages or by using <%= console %> anywhere in the code.

gem 'web-console'
gem 'listen', '~> 3.0.5'

Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring

gem 'spring'
gem 'spring-watcher-listen', '~> 2.0.0'
end

Windows does not include zoneinfo files, so bundle the tzinfo-data gem

gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]

Answer 1

「Running via Spring preloader in process」でググってみたら、「rails g」や「rails c」で同様のエラーが出る以下の様な記事が見つまりました。

http://hyperneetprogrammer.hatenablog.com/entry/2015/12/22/080000

http://qiita.com/koshigoe/items/2304ec081a9f036e8941

'spring'のバージョンを1.6.3に指定してbundle install後、再度実行してみてはいかがでしょうか？