/Python/Expected a list of items but got type int . django

Expected a list of items but got type int . django

#If you have a many to many relationship and try to pass an id:
class AlbumSerializer(serializers.ModelSerializer):
    tracks = serializers.PrimaryKeyRelatedField(queryset=Item.objects.all(), pk_field=serializers.IntegerField)

    class Meta:
        model = Album
        fields = ['album_name', 'artist', 'tracks']

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