heroku上的rails：找不到webpack dev_server配置

如何解决heroku上的rails：找不到webpack dev_server配置

我有一个部署到 heroku 的 rails 项目。部署后，webpack 打包的 CSS 不起作用，但在本地正常运行。 著名的 Heroku 应用程序日志： 在 /app/config/webpacker.yml[production] 中找不到 webpack dev_server 配置 请运行 bundle exec rails webpacker:install Webpacker 我执行$ heroku run bundle exec rails webpacker:install，情况不变。 我认为问题是 webpack 在 heroku 上无法正常工作，但我不知道如何处理。 请给我一些建议，谢谢

//procfile
    web111: bin/rails server -p $port
    webpack111: bin/webpack-dev-server



 //package.json  
  {
      "name": "test","private": true,"dependencies": {
        "@fortawesome/fontawesome-free": "^5.15.1","@fullhuman/postcss-purgecss": "^3.1.3","@rails/actioncable": "^6.0.0","@rails/activestorage": "^6.0.0","@rails/ujs": "^6.0.0","@rails/webpacker": "4.3.0","@tailwindcss/postcss7-compat": "^2.0.2","autoprefixer": "^9","flatpickr": "^4.6.9","font-awesome": "^4.7.0","postcss": "^7","tailwindcss": "npm:@tailwindcss/postcss7-compat","turbolinks": "^5.2.0"
      },"version": "0.1.0","devDependencies": {
        "webpack-dev-server": "^3.11.0"
      }
    }