ruby-on-rails - 在 Rails 资产中出现错误：使用 Webpacker 和 Heroku 的管道

Question

我有一个我继承的 Rails 5.1.4 应用程序部署到 Heroku。它正在使用带有 vuejs 的 webpacker，现在在部署到 Heroku 时遇到问题。Heroku 运行时收到以下消息rake assets:precompile:

remote:        [13] ./app/javascript/production-guarantee-component.vue 193 bytes {0} [built] [failed] [1 error]
remote:        [14] ./app/javascript/packs/tmp_dashboard.js 2.44 kB {1} [built]
remote:        + 4 hidden modules
remote:        ERROR in ./app/javascript/adder-dashboard.vue
remote:        Module parse failed: Unexpected token (1:0)
remote:        You may need an appropriate loader to handle this file type.
remote:        | <template>
remote:        |   <div class="col-md-12">
remote:        |       <adder-component v-for="category in categories" :category ="category"></adder-component>
remote:        @ ./app/javascript/packs/pricing_dashboard.js 16:0-52
remote:        ERROR in ./app/javascript/app.vue
remote:        Module parse failed: Unexpected token (1:

该代码在本地运行良好，Module parse failed对我来说甚至没有意义。什么是调试的好地方？