找不到模块'@ rails / ujs'-Rails 6 Webpack应用程序

Question

我在Rails 6应用程序中有这些错误，并且所有javascript都不起作用：

ERROR in ./app/javascript/packs/application.js
Module not found: Error: Can't resolve '@rails/activestorage' in '/Users/jrsahuquillo/Dropbox/myappname/app/javascript/packs'
 @ ./app/javascript/packs/application.js 9:0-31

ERROR in ./app/javascript/packs/application.js
Module not found: Error: Can't resolve '@rails/ujs' in '/Users/jrsahuquillo/Dropbox/myappname/app/javascript/packs'
 @ ./app/javascript/packs/application.js 5:0-21

我的package.json是：

{
  "name": "myappname",
  "private": true,
  "dependencies": {
    "@rails/actioncable": "^6.0.0-alpha",
    "@rails/activestorage": "^6.0.2",
    "@rails/ujs": "^6.0.2",
    "@rails/webpacker": "4.2.0",
    "bootstrap": "^4.4.1",
    "jquery": "^3.4.1",
    "jquery-ui": "^1.12.1",
    "jquery-ui-dist": "^1.12.1",
    "popper.js": "^1.16.0",
    "serialize-javascript": "2.1.2",
    "turbolinks": "^5.2.0"
  },
  "version": "0.1.0",
  "devDependencies": {
    "webpack-dev-server": "^3.8.0"
  },
  "optionalDependencies": {
    "fsevents": "2.0.0"
  }
}

在application.js中：

require("@rails/ujs").start();
require("turbolinks").start();
require("@rails/activestorage").start();
require("channels");
require("bootstrap/dist/js/bootstrap");

在app/views/layouts/application.html.erb中：

<%= stylesheet_link_tag 'application', media: 'all', 'data-turbolinks-track': 'reload' %>
<%= stylesheet_pack_tag 'application', media: 'all', 'data-turbolinks-track': 'reload' %>
<%= javascript_pack_tag 'application', 'data-turbolinks-track': 'reload' %>

工作正常，但我不知道它何时以及为何停止工作。有人可以帮我吗？

Answer 1

抱歉，我解决了。在出现错误之前，我安装了yarn autoclean，后来发现在.yarnclean中存在此问题：

# asset directories
docs
doc
website
images
assets

我删除了它，错误消失了。