App keeps stopping' error when the app is launched. scan the code and fix the errors that may be causing this problem.

package com.example.diceroller

import android.os$.$Bundle

import android.widget.Button

import android.widget.ImageView

import android.widget.TextView

import androidx.appcompat.app.AppCompatActivity

class MainActivity : AppCompatActivity$()\{$

override fun onCreate$($savedInstanceState: Bundle?$)\{$

super.onCreate$($savedInstanceState$)$

setContentView$($R$.$layout.activity$\_$main$)$

val rollButton: Button $=$ findViewById$($R$.$id$.$rollButton$)$

rollButton.setOnClickListener $\{$

rollDice$()$

$\}$

$\}$

private fun rollDice$()\{$

val diceImage$1$: ImageView $=$ findViewById$($R$.$id$.$diceImage$1)$

val diceImage$2$: ImageView $=$ findViewById$($R$.$id$.$diceImage$2)$

val totalTextView: TextView $=$ findViewById$($R$.$id$.$totalTextView$)$

val dice$1=(1.\mathrm{.}6).$random$()$

val dice$2=(1.\mathrm{.}6).$random$()$

val total $=$ dice$1+$ dice$2$

diceImage$1.$setImageResource$($getDiceImage$($dice$1))$

diceImage$2.$setImageResource$($getDiceImage$($dice$2))$

totalTextView.text $=$ "Sum: $total"

$\}$

private fun getDiceImage$($diceValue: Int$)$: Int $\{$

return when $($diceValue$)\{$

$1->$ R$.$drawable.dice$\_1$

$2->$ R$.$drawable.dice$\_2$

$3->$ R$.$drawable.dice$\_3$

$4->$ R$.$drawable.dice$\_4$

$5->$ R$.$drawable.dice$\_5$

else $->$ R$.$drawable.dice$\_6$

$\}$

$\}$

xml: