I get Missing.Format.ArgumentExceptions, my code is exactly the same I uderstand everyting I am frustrated and lost :(

import com.teamtreehouse.model.Song;
import com.teamtreehouse.model.SongBook;



public class Karaoke{

  public static void main(String[] args){

    Song song = new Song(     //remember the "new"  in constructors
      "Michael Jackson",
      "Beat it",
      "https://www.youtube.com/watch?v=pvdrN3GJFZo");

    SongBook songBook = new SongBook();
    System.out.printf("Adding %s %n", song);
    songBook.addSong(song);
    System.out.printf("The number of songs is: %d. %n", songBook.getSongCount());



  }



}

package com.teamtreehouse.model;

public class Song{  
  private String mTitle;
  private String mArtist;
  private String mVideoUrl;


  public Song(String artist, String title, String videoUrl){
    mArtist = artist;
    mTitle = title;
    mVideoUrl = videoUrl;    
  }

  public String getTitle(){
    return mTitle;
  }

  public String getArtist(){
    return mArtist;
  }

  public String getVideoUrl(){
    return mVideoUrl;
  }

  @Override
  public String toString(){
    return String.format("Title : %s by %s, click here: %s", mTitle, mArtist);
  }


} ```

 package com.teamtreehouse.model;

import java.util.List; //importing the list interface
import java.util.ArrayList;

public class SongBook{
  private List<Song> mSongs;      //empty interface "mSomething" is private

  public void songBook(){
    mSongs = new ArrayList<Song>(); //remember the "new" word
  }

  public void addSong(Song song){
    mSongs.add(song);
  }

  public int getSongCount(){
    return mSongs.size();
  }

} ```