Why RecyclerviewItemBinding Class can not be found in android studio?

I am trying to use the ViewBinding in the MainAdapter Class but Android Studio can not find the RecyclerviewItemBinding Class.(I also used the buildFeatures)

class MainAdapter(val taskList: List<TaskModel>) :
    RecyclerView.Adapter<MainAdapter.MainViewHolder>() {

    inner class MainViewHolder(val itemBinding: **RecyclerviewItemBinding**) :
        RecyclerView.ViewHolder(itemBinding.root) {
    }
}