TypeError: Cannot read properties of undefined (reading 't') at VueComponent.listData

new Vue({
  el: '#app',
  router,
  store,
  components: { App },
  template: '<App/>
})

main.js에서

new Vue({
  el: '#app',
  vuetify: new Vuetify()
})

vuetify: new Vuetify() 이거 하나만 추가해주면 된다.