nextInt가 import가 안됩니다.

alt+enter를 눌러도 임포트가 계속 안되는데 혹시 이유를 알수 있을까요? 혹시 몰라 MainActivity의 코드를 첨부하겠습니다!감사합니다!

package com.example.dice_app

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.util.Log
import android.widget.Toast
import androidx.databinding.DataBindingUtil
import com.example.dice_app.databinding.ActivityMainBinding
import java.util.*
import kotlin.random.Random.Default.nextInt

class MainActivity : AppCompatActivity() {

    private lateinit var binding : ActivityMainBinding

    override fun onCreate(savedInstanceState: Bundle?) {

        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        binding = DataBindingUtil.setContentView(this, R.layout.activity_main)

        val diceImage1 = binding.dice1
        val diceImage2 = binding.dice2

        binding.diceStartBtn.setOnClickListener {


            Toast.makeText(this, "주사위 GO!", Toast.LENGTH_LONG).show()

            Log.d("MainActivity", Random.nextInt(1, 6).toString())
            Log.d("MainActivity", Random.nextInt(1, 6).toString())

            val number1 = Random.nextInt(1, 6)
            val number2 = Random.nextInt(1,6)

            if (number1 ==1 ){
                diceImage1.setImageResource(R.drawable.dice_1)
            }
            else if(number1 == 2){
                diceImage1.setImageResource(R.drawable.dice_2)
            }
            else if(number1 == 3){
                diceImage1.setImageResource(R.drawable.dice_3)
            }
            else if(number1 == 4){
                diceImage1.setImageResource(R.drawable.dice_4)
            }
            else if(number1 == 5){
                diceImage1.setImageResource(R.drawable.dice_5)
            }
            else {
                diceImage1.setImageResource(R.drawable.dice_6)
            }


            if (number2 ==1 ){
                diceImage2.setImageResource(R.drawable.dice_1)
            }
            else if(number2 == 2){
                diceImage2.setImageResource(R.drawable.dice_2)
            }
            else if(number2 == 3){
                diceImage2.setImageResource(R.drawable.dice_3)
            }
            else if(number2 == 4){
                diceImage2.setImageResource(R.drawable.dice_4)
            }
            else if(number2 == 5){
                diceImage2.setImageResource(R.drawable.dice_5)
            }
            else {
                diceImage2.setImageResource(R.drawable.dice_6)
            }






        }



    }

}

import kotlin.random.Random