Vue.js в Symfony 4

Я хочу использовать vue.js с symfony 4. Но при запуске этой команды у меня возникает ошибка:

yarn encore dev-server --hot

Ошибка :

 ERROR  Failed to compile with 3 errors                                                                                                                                                       20:16:47


 error  in ./assets/js/components/Hello.vue?vue&type=template&id=e8bb2c58

Module parse failed: Unexpected token (2:0)
You may need an appropriate loader to handle this file type.
|
| <div class = "hello">
|   <h1>{{ msg }}</h1>
| </div>

 @ ./assets/js/components/Hello.vue 1:0-83 30:4-35:6 30:67-35:5
 @ ./assets/js/App.vue?vue&type=script&lang=js
 @ ./assets/js/App.vue
 @ ./assets/js/main.js
 @ multi (webpack)-dev-server/client?http://localhost:8080 webpack/hot/dev-server ./assets/js/main.js

 error  in ./assets/js/App.vue?vue&type=template&id=12494949

Module parse failed: Unexpected token (2:0)
You may need an appropriate loader to handle this file type.
|
| <div id = "app">
|   <hello></hello>
| </div>

 @ ./assets/js/App.vue 1:0-81 30:4-35:6 30:65-35:5
 @ ./assets/js/main.js
 @ multi (webpack)-dev-server/client?http://localhost:8080 webpack/hot/dev-server ./assets/js/main.js

 error  in ./assets/js/App.vue

vue-loader was used without the corresponding plugin. Make sure to include VueLoaderPlugin in your webpack config.

 @ ./assets/js/main.js 2:0-24
 @ multi (webpack)-dev-server/client?http://localhost:8080 webpack/hot/dev-server ./assets/js/main.js

Я не понимаю, почему это не работает. Я использую WAMP как сервер. Спасибо