ruby-on-rails - 这是做什么的：`const { $ } = require("@rails/ujs");` 在我的 Rails 应用程序中？它似乎导致错误

Question

在app/javascript/packs/application.js我看到：const { $ } = require("@rails/ujs");

由于某些未知原因，我收到此错误：

rails-ujs.js:73 Uncaught DOMException: Failed to execute 'querySelectorAll' on 'Document': '[object HTMLDocument]' is not a valid selector.
    at ./node_modules/@rails/ujs/lib/assets/compiled/rails-ujs.js.Rails.$ (http://192.168.1.34:3000/packs/js/application-82ae508a0043ae1b2583.js:1497:52)
    at Object../app/javascript/packs/application.js (http://192.168.1.34:3000/packs/js/application-82ae508a0043ae1b2583.js:207:1)
    at __webpack_require__ (http://192.168.1.34:3000/packs/js/application-82ae508a0043ae1b2583.js:20:30)
    at http://192.168.1.34:3000/packs/js/application-82ae508a0043ae1b2583.js:84:18
    at http://192.168.1.34:3000/packs/js/application-82ae508a0043ae1b2583.js:87:10

当我注释掉这一行时：const { $ } = require("@rails/ujs");- 然后错误消失了，但我不知道我是否需要这一行？

这个错误以前没有发生过……希望我有更多的细节，但我没有。