DOM Refresh Problem

Hello guys, I've got a refreshing DOM problem with my code but I don't know where... This the part of code (1st screenshot), the template part (2nd screenshot) and the console.log(emojiContainer.value) in 3rd part. The code part is in an asynchronous function and for console.log(await nextTick());, I've got an undefined even if it is import with import { nextTick, ref, onMounted, getCurrentInstance } from "vue";... I don't know where to search, if somebody knows what to do, i'll take it 😅 Thx !