Getting type 'Null' is not a subtype of type 'Map<String, dynamic>' on the example code

[Victorhin00]

Hello, i have a little problem.

I've copied the example script from here : https://pub.dev/packages/spotify/example , just i've kept only the search section. None of the code is changed. Everything is original.

My code is :

  var credentials = SpotifyApiCredentials('id','secret');
  var spotify = SpotifyApi(credentials);


  print("\nSearching for \'Metallica\':");
  var search = await spotify.search
      .get('metallica')
      .first(2)
      .catchError((err) => print((err as SpotifyException).message));
  if (search == null) {
    return;
  }
  search.forEach((pages) {
    pages.items!.forEach((item) {
      if (item is PlaylistSimple) {
        print('Playlist: \n'
            'id: ${item.id}\n'
            'name: ${item.name}:\n'
            'collaborative: ${item.collaborative}\n'
            'href: ${item.href}\n'
            'trackslink: ${item.tracksLink!.href}\n'
            'owner: ${item.owner}\n'
            'public: ${item.owner}\n'
            'snapshotId: ${item.snapshotId}\n'
            'type: ${item.type}\n'
            'uri: ${item.uri}\n'
            'images: ${item.images!.length}\n'
            '-------------------------------');
      }
      if (item is Artist) {
        print('Artist: \n'
            'id: ${item.id}\n'
            'name: ${item.name}\n'
            'href: ${item.href}\n'
            'type: ${item.type}\n'
            'uri: ${item.uri}\n'
            '-------------------------------');
      }
      if (item is TrackSimple) {
        print('Track:\n'
            'id: ${item.id}\n'
            'name: ${item.name}\n'
            'href: ${item.href}\n'
            'type: ${item.type}\n'
            'uri: ${item.uri}\n'
            'isPlayable: ${item.isPlayable}\n'
            'artists: ${item.artists!.length}\n'
            'availableMarkets: ${item.availableMarkets!.length}\n'
            'discNumber: ${item.discNumber}\n'
            'trackNumber: ${item.trackNumber}\n'
            'explicit: ${item.explicit}\n'
            '-------------------------------');
      }
      if (item is AlbumSimple) {
        print('Album:\n'
            'id: ${item.id}\n'
            'name: ${item.name}\n'
            'href: ${item.href}\n'
            'type: ${item.type}\n'
            'uri: ${item.uri}\n'
            'albumType: ${item.albumType}\n'
            'artists: ${item.artists!.length}\n'
            'availableMarkets: ${item.availableMarkets!.length}\n'
            'images: ${item.images!.length}\n'
            'releaseDate: ${item.releaseDate}\n'
            'releaseDatePrecision: ${item.releaseDatePrecision}\n'
            '-------------------------------');
      }
    });
  });

  var relatedArtists =
  await spotify.artists.relatedArtists('0OdUWJ0sBjDrqHygGUXeCF');
  print('\nRelated Artists: ${relatedArtists.length}');

  credentials = await spotify.getCredentials();
  print('\nCredentials:');
  print('Client Id: ${credentials.clientId}');
  print('Access Token: ${credentials.accessToken}');
  print('Credentials Expired: ${credentials.isExpired}');
}

I keep getting the songs, which is a good thing, but i have this error as well. I'm still a beginner on dart, so i dont really know how to solve this one.

-------------------------------
Track:
id: 0LAcM6I7ijW4VVW0aytl1t
name: One (Remastered)
href: https://api.spotify.com/v1/tracks/0LAcM6I7ijW4VVW0aytl1t
type: track
uri: spotify:track:0LAcM6I7ijW4VVW0aytl1t
isPlayable: null
artists: 1
availableMarkets: 2
discNumber: 1
trackNumber: 4
explicit: false
-------------------------------
Unhandled exception:
type 'Null' is not a subtype of type 'Map<String, dynamic>'
#0      Search.get.<anonymous closure> (package:spotify/src/endpoints/search.dart:40:40)
#1      MappedListIterable.elementAt (dart:_internal/iterable.dart:413:31)
#2      ListIterable.forEach (dart:_internal/iterable.dart:39:14)
#3      main.<anonymous closure> (package:playit/scripts/spotify.dart:25:18)
#4      List.forEach (dart:core-patch/growable_array.dart:433:8)
#5      main (package:playit/scripts/spotify.dart:24:10)
<asynchronous suspension>

Thanks for reading me

[Victorhin00]

After investigation, it seems that the 4th value of the list returned by the api is bugged. Simply remove it with this

for (var pages in search) {
      a.add(pages);
    }
    a.remove(a[4]);

[letyletylety]

is this problem from spotify api or from this plugin?

[rinukkusu]

Probably a mapping error somewhere - needs investigation!