Runtime Error : java.lang.RuntimeException: Unable to start activity ComponentInfo

Question

My app is getting crashed on runtime while running this code setupActionBarWithNavController(findNavController(R.id.fragmentContainerView))

I am trying to add a menu bar but the app keeps crashing.

I can't understand the reason here are my files and let me know if any more files need to be added

MainActivity

package com.example.todoappcbpractice2

import android.content.Intent
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.view.Menu
import android.view.MenuItem
import androidx.navigation.findNavController
import androidx.navigation.ui.setupActionBarWithNavController
import kotlinx.android.synthetic.main.fragment_list.*

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        setupActionBarWithNavController(findNavController(R.id.fragmentContainerView))      //---App crashed here

    }


}

ActivityMain.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <androidx.fragment.app.FragmentContainerView
        android:id="@+id/fragmentContainerView"
        android:name="androidx.navigation.fragment.NavHostFragment"
        android:layout_width="0dp"
        android:layout_height="729dp"
        android:layout_marginStart="1dp"
        android:layout_marginLeft="1dp"
        android:layout_marginEnd="1dp"
        android:layout_marginRight="1dp"
        app:defaultNavHost="true"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:navGraph="@navigation/my_nav" />
</androidx.constraintlayout.widget.ConstraintLayout>

fragment_list.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/idFragmentList"
    android:name="androidx.navigation.fragment.my_nav"
    tools:context=".fragments.list.ListFragment">


    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/recyclerView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:listitem="@layout/item_todo" />

    <com.google.android.material.floatingactionbutton.FloatingActionButton
        android:id="@+id/addBtn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentEnd="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentBottom="true"
        android:layout_marginStart="32dp"
        android:layout_marginLeft="32dp"
        android:layout_marginTop="32dp"
        android:layout_marginEnd="32dp"
        android:layout_marginRight="32dp"
        android:layout_marginBottom="32dp"
        android:src="@drawable/ic_baseline_add_24" />


</RelativeLayout>

Error Log

2021-05-21 17:39:35.550 9535-9535/com.example.todoappcbpractice2 E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.todoappcbpractice2, PID: 9535
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.todoappcbpractice2/com.example.todoappcbpractice2.MainActivity}: java.lang.IllegalStateException: Activity com.example.todoappcbpractice2.MainActivity@8b7265a does not have a NavController set on 2131230896
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3310)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3459)
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2046)
        at android.os.Handler.dispatchMessage(Handler.java:107)
        at android.os.Looper.loop(Looper.java:225)
        at android.app.ActivityThread.main(ActivityThread.java:7564)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:539)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:950)
     Caused by: java.lang.IllegalStateException: Activity com.example.todoappcbpractice2.MainActivity@8b7265a does not have a NavController set on 2131230896
        at androidx.navigation.Navigation.findNavController(Navigation.java:61)
        at androidx.navigation.ActivityKt.findNavController(Activity.kt:30)
        at com.example.todoappcbpractice2.MainActivity.onCreate(MainActivity.kt:17)
        at android.app.Activity.performCreate(Activity.java:7916)
        at android.app.Activity.performCreate(Activity.java:7903)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1307)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3285)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3459) 
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83) 
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135) 
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2046) 
        at android.os.Handler.dispatchMessage(Handler.java:107) 
        at android.os.Looper.loop(Looper.java:225) 
        at android.app.ActivityThread.main(ActivityThread.java:7564) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:539) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:950) 

I am new in Kotlin Android Dev so let me know any improvements advice.