Jammming - Save to Spotify doesn't work

I just completed step 95, everything seems to be working except for Save to Spotify. When I click on that, nothing happens, can someone help?

Here is my Spotify.js:

import React from 'react';
import './App.css';
import { SearchBar } from '../SearchBar/SearchBar';
import { SearchResults } from '../SearchResults/SearchResults.js';
import { Playlist } from '../Playlist/Playlist.js';
import  Spotify  from '../../util/Spotify.js';

class App extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      searchResults: [],
      playlistName: 'My Playlist',
      playlistTracks: [],
    };
    this.addTrack = this.addTrack.bind(this);
    this.removeTrack = this.removeTrack.bind(this);
    this.updatePlaylistName = this.updatePlaylistName.bind(this);
    this.savePlaylist = this.savePlaylist.bind(this);
    this.search = this.search.bind(this);
  }

  addTrack(track) {
    let tracks = this.state.playlistTracks;
    if (tracks.find((savedTracks) => savedTracks.id === track.id)) {
      return;
    }
    tracks.push(track);
    this.setState({ playlistTracks: tracks });
  }

  removeTrack(track) {
    let tracks = this.state.playlistTracks;
    tracks = tracks.filter((currentTrack) => currentTrack.id !== track.id);
    this.setState({ playlistTracks: tracks });
  }

  updatePlaylistName(name) {
    this.setState({ playlistName: name });
  }

  savePlaylist() {
    let trackUris = this.state.playlistTracks.map((track) => track.uri);
    Spotify.savePlaylist(this.state.playlistName, trackUris).then(() => {
      this.setState({ playlistName: 'New Playlist', playlistTracks: [] });
    });
  }

  search(term) {
    Spotify.search(term).then((searchResults) => {
      this.setState({ searchResults: searchResults });
    });
  }

  render() {
    return (
      <div>
        <h1>
          Ja<span className="highlight">mmm</span>ing
        </h1>
        <div className="App">
          <SearchBar onSearch={this.search} />
          <div className="App-playlist">
            <SearchResults
              onAdd={this.addTrack}
              searchResults={this.state.searchResults}
            />
            <Playlist
              playlistName={this.state.playlistName}
              playlistTracks={this.state.playlistTracks}
              onRemove={this.removeTrack}
              onNameChange={this.updatePlaylistName}
              onSave={this.savePlaylist}
            />
          </div>
        </div>
      </div>
    );
  }
}

export default App;