70842
railsでアプリを作成して、awsへ自動デプロイをしようとしています

自動デプロイをしようと下記を実行したところ

```

    bundle exec cap production deploy
    
```

以下のエラーが発生してしまいます

```

    bundler: failed to load command: cap (/Users/user/.rbenv/versions/2.5.1/bin/cap)
    Gem::Exception: can't find executable cap for gem capistrano. capistrano is not currently included in the bundle, perhaps you meant to add it to your Gemfile?
      /Users/user/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bundler-2.1.4/lib/bundler/rubygems_integration.rb:374:in `block in replace_bin_path'
      /Users/user/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bundler-2.1.4/lib/bundler/rubygems_integration.rb:402:in `block in replace_bin_path'
      /Users/user/.rbenv/versions/2.5.1/bin/cap:23:in `<top (required)>'
    
```

gemやバージョン関係のエラーと考えていますが、どういったエラーなのでしょうか？  
過去に余計にエラーを発生させてしまったことがあり、確信を持てないままデバッグするのが怖く、質問させていただきました

Gemfile

```

    source 'https://rubygems.org'
    git_source(:github) { |repo| "https://github.com/#{repo}.git" }
    
    ruby '2.5.1'
    
    # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
    gem 'rails', '~> 5.2.3'
    # Use mysql as the database for Active Record
    gem 'mysql2', '0.5.2'
    # Use Puma as the app server
    gem 'puma', '~> 3.11'
    # Use SCSS for stylesheets
    gem 'sass-rails', '5.0.7'
    # Use Uglifier as compressor for JavaScript assets
    gem 'uglifier', '>= 1.3.0'
    # See https://github.com/rails/execjs#readme for more supported runtimes
    # gem 'mini_racer', platforms: :ruby
    
    # Use CoffeeScript for .coffee assets and views
    gem 'coffee-rails', '~> 4.2'
    # 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', '~> 4.0'
    # Use ActiveModel has_secure_password
    # gem 'bcrypt', '~> 3.1.7'
    
    # Use ActiveStorage variant
    # gem 'mini_magick', '~> 4.8'
    
    # Use Capistrano for deployment
    # gem 'capistrano-rails', group: :development
    
    # Reduces boot times through caching; required in config/boot.rb
    gem 'bootsnap', '>= 1.1.0', require: false
    
    group :development, :test do
      # Call 'byebug' anywhere in the code to stop execution and get a debugger console
      gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
      # gem 'capistrano'
      # gem 'capistrano-rbenv'
      # gem 'capistrano-bundler'
      # gem 'capistrano-rails'
      # gem 'capistrano3-unicorn'
    end
    
    group :development do
      # Access an interactive console on exception pages or by calling 'console' anywhere in the code.
      gem 'web-console', '>= 3.3.0'
      gem 'listen', '>= 3.0.5', '< 3.2'
      # 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
    
    group :test do
      # Adds support for Capybara system testing and selenium driver
      gem 'capybara', '>= 2.15'
      gem 'selenium-webdriver'
      # Easy installation and use of chromedriver to run system tests with Chrome
      gem 'chromedriver-helper'
    end
    
    # Windows does not include zoneinfo files, so bundle the tzinfo-data gem
    gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]
    
    gem 'pry-rails'
    gem 'compass-rails', '3.1.0'
    gem 'sprockets', '3.7.2'
    gem 'kaminari'
    gem 'jquery-rails'
    gem 'fullcalendar-rails'
    gem 'momentjs-rails'
    gem 'rails-i18n'
    gem 'devise'
    gem 'carrierwave'
    gem 'mini_magick'
    gem "font-awesome-sass"
    gem 'ancestry'
    # gem 'fog-aws'
    
    group :production do
      gem 'unicorn', '5.4.1'
    end
    
```
CC BY-SA 4.0
2020-09-30T06:09:29.207
70832
2020-09-30T11:00:21.753
2020-09-30T11:00:21.753
19110
42029
question
ruby-on-rails rubygems capistrano
自動デプロイ時にエラーがでる: failed to load command: cap
capistrano がインストールされていないため、`cap` がロードできないというエラーが起こっています。

Gemfile をよく見ると capistrano の行はコメントアウトされており、`bundle install` しても capistrano
がインストールされていません。Gemfile を見直してください。

```

    # gem 'capistrano'
    
```
CC BY-SA 4.0
2020-09-30T10:59:30.577
70842
2020-09-30T10:59:30.577
19110
70832
answer