Error en el objetivo planteado: Show-Related-Records Estoy planteando lo que piden, no entiendo cual es el error?

from rest_framework import serializers

from . import models


class GameSerializer(serializers.ModelSerializer):

    class Meta:
        fields = ('id', 'name', 'games')
        model = models.Game


class PlayerSerializer(serializers.ModelSerializer):
    class Meta:
        fields = ('id', 'name', 'player')
        model = models.Player


class ScoreSerializer(serializers.ModelSerializer):
    game = serializers.HyperlinkedRelatedField(
        many=True,
        read_only=True,
        view_name="apiv2:game-detail"
    )
    player = serializers.HyperlinkedRelatedField(
        many=True,
        read_only=True,
        view_name = "apiv2:player-detail"
    )
    class Meta:
        fields = ('id', 'game', 'player', 'score')
        model = models.Score