message: Fix missing vuetify instance
diff: import Vue from "vue";
  -import Vuetify from "vuetify";
  -import "vuetify/dist/vuetify.min.css";
  import VueRouter from "vue-router";
  -import { router } from "./router";
  +import Vuetify from "vuetify";
  import App from "./App.vue";
  +import { router } from "./router";
  import "vuetify/dist/vuetify.min.css";
  -Vue.use(Vuetify);
  Vue.use(VueRouter);
  +Vue.use(Vuetify);
  +const vuetify = new Vuetify();
  new Vue({
  + vuetify,
  router,
  render: (h) => h(App),
  }).$mount("#root");
  