In general html, it is used well as written in docs, but it does not work properly in my vue project.Is it a problem that I didn't import popper.js? I don't think I'm exporting to html, and I'm not sure where to import it.To be precise, the normal navbar works, but the external content menu, which works on a small screen(mobile), does not work properly. help me main.js
import { createApp } from 'vue'
import App from './App.vue'
import router from './routes/index.js'
createApp(App)
//plugin
.use(router)
.mount('#app')
