以下リンク先にある内容を実行した後、今回の問題に遭遇しました。

[rails sした時にalready initialized constant FileUtils::VERSIONとwarningが出てくる -
Qiita](https://qiita.com/zQmjRAb73seN5RM/items/ecb9e19ee8f3e9af6018)

`railties`を5.2.3にすれば解決できるのかと思い、`railties
6.0.0`の対象と思われるディレクトリ削除や対象のgemのアンインストールなどしてみましたが、結果は変わらず、上のようなエラーが出てしまいます。

**railsコマンド実行時に表示されたエラー**

```

    $ rails s
    Traceback (most recent call last):
            1: from /Users/pc/.rbenv/versions/2.5.1/bin/rails:23:in `<main>'
    /Users/pc/.rbenv/versions/2.5.1/bin/rails:23:in `load': cannot load such file -- /Users/pc/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-6.0.0/exe/rails (LoadError)
    
```

**実行環境** (ローカル)

Rails 5.2.3  
Ruby 2.5.1

* * *
```

    #!/usr/bin/env ruby
    #
    # This file was generated by RubyGems.
    #
    # The application 'railties' is installed as part of a gem, and
    # this file is here to facilitate running it.
    #
    
    require 'rubygems'
    
    version = ">= 0.a"
    
    if ARGV.first
      str = ARGV.first
      str = str.dup.force_encoding("BINARY") if str.respond_to? :force_encoding
      if str =~ /\A_(.*)_\z/ and Gem::Version.correct?($1) then
        version = $1
        ARGV.shift
      end
    end
    
    if Gem.respond_to?(:activate_bin_path)
    load Gem.activate_bin_path('railties', 'rails', version) #23行目
    else
    gem "railties", version
    load Gem.bin_path("railties", "rails", version)
    end
    
    
```

**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 sqlite3 as the database for Active Record
    gem 'sqlite3'
    # Use Puma as the app server
    gem 'puma', '~> 3.11'
    # Use SCSS for stylesheets
    gem 'sass-rails', '~> 5.0'
    
    # CSSフレームワークとして追加
    gem 'materialize-sass', '~> 1.0.0'
    
    # 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]
    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]
    
    
    
```
CC BY-SA 4.0
2019-11-04T03:03:39.847
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2019-11-07T00:44:12.963
2019-11-07T00:44:12.963
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question
ruby-on-rails ruby
railtiesがバージョン違いのせいか、LoadErrorが出てrailsコマンドが実行できない