Application on android studio works on android 10.0 but not on android 12.0

Android
1

Hello,
I’m a beginner on android studio and kotlin and I have a problem. I made a simple application to start, it works in simulation on a Nexus 5X with android 10.0, but not on a PIXEL 6 with android 12.0 and I don’t understand why.
I only want to display a toast when I press a button

Here is my MainActivity code:

package com.example.helloword2

import android.support.v7.app.AppCompatActivity
import android.os.Bundle
import android.widget.Button
import android.widget.Toast

// entrer principale de l'app
class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) { 
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main )

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


        rollButton.setOnClickListener { rollDice() } 
    }


    private fun rollDice()     
    { 

        Toast.makeText(this, "Button clicked", Toast.LENGTH_SHORT).show()
    }

}

Hnd my activity_main.xml code

<?xml version="1.0" encoding="utf-8"?>


<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:layout_gravity="center_vertical"
    tools:context=".MainActivity" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:textSize="30sp"
        android:text="Hello World!"/>

    <Button
        android:id="@+id/roll_button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:text="@string/roll_label"/>

</LinearLayout>

Does anyone know why this doesn’t work?
Thank you.