You are using the runtime-only build of Vue where the template compiler is not available. Either pre-compile the templates into render functions, or use the compiler-included build

参考：https://blog.csdn.net/wxl1555/article/details/83187647

 

可实现：

main。js

new Vue({
  router,
  store,
  render: h => h(App)
}).$mount("#app")