我是Ruby on Rails的新手，这是我尝试的第一个项目。我安装了Rails，并进入屏幕，让我知道我已经成功安装了Rails。Rails Page
我运行rails g controller home index创建了我的第一个网页，它成功完成并显示如下：

user@Ubuntu:~/dev/app$ rails g controller home index
Running via Spring preloader in process 183578
      create  app/controllers/home_controller.rb
       route  get 'home/index'
      invoke  erb
      create    app/views/home
      create    app/views/home/index.html.erb
      invoke  test_unit
      create    test/controllers/home_controller_test.rb
      invoke  helper
      create    app/helpers/home_helper.rb
      invoke    test_unit
      invoke  assets
      invoke    scss
      create      app/assets/stylesheets/home.scss

我尝试访问该页面，但它给了我这个错误：

Webpacker can't find application.js in /home/user/dev/app/public/packs/manifest.json. Possible causes:
1. You want to set webpacker.yml value of compile to true for your environment
   unless you are using the `webpack -w` or the webpack-dev-server.
2. webpack has not yet re-run to reflect updates.
3. You have misconfigured Webpacker's config/webpacker.yml file.
4. Your webpack configuration is not creating a manifest.
Your manifest contains:
{
}

我尝试将webpacker.yml中的cache_manifest: false和extract_css: false更改为true，但似乎没有帮助。我觉得webpacker安装不正确，所以我运行rails webpacker:install。它失败了，并且从未成功完成：

`user@Ubuntu:~/dev/app$ bundle exec rails webpacker:install
    conflict  config/webpacker.yml
Overwrite /home/user/dev/app/config/webpacker.yml? (enter "h" for help) [Ynaqdhm] n
        skip  config/webpacker.yml
Copying webpack core config
       exist  config/webpack
   identical  config/webpack/development.js
   identical  config/webpack/environment.js
   identical  config/webpack/production.js
   identical  config/webpack/test.js
Copying postcss.config.js to app root directory
   identical  postcss.config.js
Copying babel.config.js to app root directory
   identical  babel.config.js
Copying .browserslistrc to app root directory
   identical  .browserslistrc
rails aborted!
NoMethodError: undefined method `exists?' for Dir:Class
/home/user/dev/app/bin/rails:5:in `<top (required)>'
/home/user/dev/app/bin/spring:10:in `require'
/home/user/dev/app/bin/spring:10:in `block in <top (required)>'
/home/user/dev/app/bin/spring:7:in `<top (required)>'
Tasks: TOP => app:template`

知道如何解决这个问题吗？这个错误太普遍了，我在搜索答案时遇到了麻烦。

轨道中止！
无方法错误：Dir：Class的未定义方法“exists？"

环境：Ubuntu 22.04 LTS台式机|导轨版本：6.1.7|Ruby版本：3.2.0