Jammming help

I’m working on the Jammming project and I am stuck at step 34. I will include my code in TrackList.js below, but the error I get is ‘TypeError: this.props.tracks is undefined’. Could anyone help me?

import React from 'react'
import './TrackList.css'
import Track from '../Track/Track';

class TrackList extends React.Component {
  render(){
    return(
      <div className="TrackList">
        {this.props.tracks.map(track => <Track track={track} key={track.id}/>)}
      </div>
    )
  }
}

export default TrackList

Im pretty bad at JS but when looking at this I don’t see what this.props.tracks is because the error says:

Maybe try looking closer at your this.props.track, it says its “undefined”