استاد ارور سرسختی داریم

سلام

استاد یه بارم پرسیدم این سوالو ولی چون جواب زیادی بهش داده شد و هنوز مشکل حل نشده فک کردم اونو نبینید و دوباره سوال و بپرسم

views
def product_detail(request, *args, **kwargs):
    selected_game_id = kwargs['gameId']
    product_name = kwargs['name']

    games = game.objects.get_by_id(selected_game_id)

    if games is None or not games.active:
        raise Http404('محصول مورد نظر یافت نشد')

    related_game = game.objects.get_queryset().filter(categories__game=game).distinct()

    galleries = GameGallery.objects.filter(game_id=selected_game_id)
    link = DownloadGame.objects.filter(game_id=selected_game_id)

    grouped_related_game = my_grouper(3, related_game)

    context = {
        'games': games,
        'galleries': galleries,
        'link': link,
        'grouped_related_game': grouped_related_game,
    }

    return render(request, 'products/product_detail_game.html', context)

models
class GameManager(models.Manager):
    def get_active_products(self):
        return self.get_queryset().filter(active=True)

    def get_products_by_category(self, category_name):
        return self.get_queryset().filter(categories__name__iexact=category_name, active=True)

    def get_by_id(self, game_id):
        qs = self.get_queryset().filter(id=game_id)
        if qs.count() == 1:
            return qs.first()
        else:
            return None


class game(models.Model):
    title = models.CharField(max_length=150, verbose_name='عنوان')
    developer_game = models.CharField(max_length=150, null=True, verbose_name='سازنده', blank=True)
    size_game = models.CharField(max_length=150, null=True, verbose_name='حجم', blank=True)
    of_on = models.CharField(max_length=150, null=True, verbose_name='آفلاین/آنلاین', blank=True)
    category = models.CharField(max_length=150, null=True, verbose_name='دسته بندی', blank=True)
    text_h1 = models.CharField(max_length=150, null=True, verbose_name='متن بزرگ 1', blank=True)
    text_h2 = models.CharField(max_length=150, null=True, verbose_name='متن بزرگ 2', blank=True)
    description_1 = models.TextField(verbose_name='توضیحات 1', null=True, blank=True)
    description_2 = models.TextField(verbose_name='توضیحات 2', null=True, blank=True)
    image = models.ImageField(upload_to=upload_image_path, null=True, blank=True, verbose_name='تصویر')
    image_1 = models.ImageField(upload_to=upload_image_path, null=True, blank=True, verbose_name='تصویر 1')
    active = models.BooleanField(default=False, verbose_name='فعال / غیرفعال')
    categories = models.ManyToManyField(GameCategory, blank=True, verbose_name="دسته بندی ها")

    objects = GameManager()

urls
urlpatterns = [

    path('game/', ProductsListGame.as_view()),
    path('game/search', SearchProductsView.as_view()),
    path('game/<gameId>/<name>', product_detail),
    path('game/<category_name>', GameListByCategory.as_view()),
    path('products_categories_partial_game', products_categories_partial_game, name='products_categories_partial_game')

]

templte
{% for group in grouped_related_game %}
                        {% for game in games %}
                            <div class="slide">
                                <div class="panel panel-default" style="margin:0;padding-left: 40px">
                                    <img src="{% static 'images/5.jpg' %}" class="img-responsive imgfluid"/>
                                    <div class="panel-body" style="margin: 0">
                                        <h4 style="margin:0;padding-top: 10px">clash of clans</h4>

                                        <button class="btn btn-info1 btn-cs button-cs">
                                            <svg style="margin-left: 10px;padding-right: 0"
                                                 xmlns="http://www.w3.org/2000/svg"
                                                 width="16" height="16" fill="currentColor"
                                                 class="bi bi-download" viewBox="0 0 16 16">
                                                <path d="M.5 9.9a.5.5 0 0 1 .5.5v2.5a1 1 0 0 0 1 1h12a1 1 0 0 0 1-1v-2.5a.5.5 0 0 1 1 0v2.5a2 2 0 0 1-2 2H2a2 2 0 0 1-2-2v-2.5a.5.5 0 0 1 .5-.5z"/>
                                                <path d="M7.646 11.854a.5.5 0 0 0 .708 0l3-3a.5.5 0 0 0-.708-.708L8.5 10.293V1.5a.5.5 0 0 0-1 0v8.793L5.354 8.146a.5.5 0 1 0-.708.708l3 3z"/>
                                            </svg>
                                            دانلود
                                        </button>
                                        +3
                                        <span class="fa fa-star checked"></span>
                                        <span class="fa fa-star checked"></span>
                                        <span class="fa fa-star checked"></span>
                                        <span class="fa fa-star"></span>
                                        <span class="fa fa-star"></span>

                                    </div>
                                </div>
                            </div>
                        {% endfor %}
                    {% endfor %}

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