Need help: navGraph, setSupportActionBar, navController, viewBinding kotlin

I am amater android develop, this code I got this code from youtube channel by Philipp Lackner, which was written 2 years ago, but it no actulity now, but not relevant now, I had to change it a bit.

I couldn't figure out on my own what I did wrong. The application throws out after activation:

activity_main.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:id="@+id/rootView"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <com.google.android.material.appbar.AppBarLayout
        android:id="@+id/appBarLayout"
        android:layout_width="match_parent"
        android:layout_height="?android:attr/actionBarSize"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">

        <com.google.android.material.appbar.MaterialToolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="match_parent">

            <com.google.android.material.textview.MaterialTextView
                android:id="@+id/tvToolbarTitle"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:gravity="center_vertical"
                android:text="Running App"
                android:textColor="@android:color/white"
                android:textSize="30sp"
                android:textStyle="bold"
                app:layout_constraintBottom_toBottomOf="parent"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintHorizontal_bias="0.5"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toTopOf="parent" />

        </com.google.android.material.appbar.MaterialToolbar>
    </com.google.android.material.appbar.AppBarLayout>

    <FrameLayout
        android:id="@+id/flFragment"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        app:layout_constraintBottom_toTopOf="@+id/bottomNavigationView"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/appBarLayout">
        <fragment
            android:id="@+id/navHostFragment"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:name="androidx.navigation.fragment.NavHostFragment"
            app:defaultNavHost="true"
            app:navGraph="@navigation/nav_graph"/>


    </FrameLayout>

    <com.google.android.material.bottomnavigation.BottomNavigationView
        android:id="@+id/bottomNavigationView"
        android:layout_width="match_parent"
        android:layout_height="56dp"
        app:itemIconTint="@drawable/bottom_nav_selector"
        app:itemTextColor="@drawable/bottom_nav_selector"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toStartOf="parent" />


</androidx.constraintlayout.widget.ConstraintLayout>

MainActivity.kt

package com.example.runningapp.ui

import android.os.Bundle
import android.view.View
import androidx.appcompat.app.AppCompatActivity
import androidx.navigation.fragment.NavHostFragment
import androidx.navigation.fragment.findNavController
import androidx.navigation.ui.setupWithNavController
import com.example.runningapp.R
import com.example.runningapp.databinding.ActivityMainBinding
import dagger.hilt.android.AndroidEntryPoint


@AndroidEntryPoint
class MainActivity : AppCompatActivity() {

    private lateinit var binding: ActivityMainBinding

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        binding = ActivityMainBinding.inflate(layoutInflater)
        val view = binding.root
        setContentView(view)

        setSupportActionBar(binding.toolbar)


        val navHostFragment = supportFragmentManager.findFragmentById(R.id.navHostFragment) as NavHostFragment
        val navController = navHostFragment.navController
        val navGraph = navController.navInflater.inflate(R.navigation.nav_graph)
        navController.graph = navGraph
        binding.bottomNavigationView.setupWithNavController(navHostFragment.findNavController())
        navHostFragment.findNavController()
            .addOnDestinationChangedListener{_, destination,_ ->
             when(destination.id) {
            R.id.settingsFragment, R.id.runFragment, R.id.statisticsFragment ->
                binding.bottomNavigationView.visibility = View.VISIBLE
                 else ->binding.bottomNavigationView.visibility = View.GONE
                 }
            }