Getting "TemplateDoesNotExist at /filter/" error?

Question

Django

from django.shortcuts import redirect
from django.views.generic import DetailView, ListView
from django.views.generic.base import View

from .forms import ReviewForm
from .models import Movie, Actor, Ganer


class GanerYear:
    """Жанры и года выхода фильмов"""

    def get_ganres(self):
        return Ganer.objects.all()

    def get_years(self):
        return Movie.objects.filter(draft=False).values('year')


class MoviesListView(GanerYear, ListView):
    """Вывод все фильмов на главнаю"""
    model = Movie
    template_name = 'movies/movie_list.html.twig'
    context_object_name = 'movie_list'
    allow_empty = False
    queryset = Movie.objects.filter(draft=False)


class MovieDetailView(GanerYear, DetailView):
    """Вывод детальной информации о фильме"""
    model = Movie
    template_name = 'movies/movie_detail.html.twig'
    context_object_name = 'movie'
    allow_empty = False


class AddReview(View):
    """Отзывы"""

    def post(self, request, pk):
        form = ReviewForm(request.POST)
        movie = Movie.objects.get(id=pk)
        if form.is_valid():
            form = form.save(commit=False)
            if request.POST.get('parent', None):
                form.parent_id = int(request.POST.get('parent'))
            form.movie = movie
            form.save()
        return redirect(movie.get_absolute_url())


class ActorDetailView(GanerYear, DetailView):
    """Вывод информации о актере"""
    model = Actor
    template_name = 'movies/actor.html.twig'
    context_object_name = 'actor'
    allow_empty = False


class FilterMoviesView(GanerYear, ListView):
    """Фильтр фильмов"""
    def get_queryset(self):
        queryset = Movie.objects.filter(year__in=self.request.GET.getlist("year"))
        return queryset

from django.db import models
from datetime import date

from django.urls import reverse


class Category(models.Model):
    """Категории"""
    name = models.CharField('Категория', max_length=160)
    descriptions = models.TextField('Описание')
    slug = models.SlugField(max_length=100, unique=True)

    def get_absolute_url(self):
        return reverse('index', kwargs={'slug': self.slug})

    def __str__(self):
        return self.name

    class Meta:
        verbose_name = 'Категория'
        verbose_name_plural = 'Категории'


class Actor(models.Model):
    """Актёры и режиссеры"""
    name = models.CharField('Имя', max_length=100)
    birthday = models.DateField('Дата рождения', null=True)
    descriptions = models.TextField('Описание')
    image = models.ImageField('Изображение', upload_to='actor/')
    slug = models.SlugField(max_length=100, unique=True)

    def calculate_age(self):
        """Расчёт возроста"""
        dob = self.birthday
        today = date.today()
        if dob:
            m = today.year - dob.year - ((today.month, today.day) < (dob.month, dob.day))
            k = m % 10
            if (m > 9) and (m < 20) or (m > 110) or (k > 4) or (k == 0):
                return f'{m} лет'
            elif k == 1:
                return f'{m} год'
            else:
                return f'{m} года'

    calculate_age.short_description = 'Возрост'

    def get_absolute_url(self):
        return reverse('actor_detail', kwargs={'slug': self.slug})

    def __str__(self):
        return self.name

    class Meta:
        verbose_name = 'Актёры и режиссеры'
        verbose_name_plural = 'Актёры и режиссеры'


class Ganer(models.Model):
    """Жанры"""
    name = models.CharField('Имя', max_length=100)
    descriptions = models.TextField('Описание')
    slug = models.SlugField(max_length=160, unique=True)

    def __str__(self):
        return self.name

    class Meta:
        verbose_name = 'Жанр'
        verbose_name_plural = 'Жанры'


class Movie(models.Model):
    """Фильмы"""
    title = models.CharField('Название', max_length=100)
    descriptions = models.TextField('Описание')
    image = models.ImageField('Постер', upload_to='movies/')
    year = models.PositiveSmallIntegerField('Год производства', default=2020)
    country = models.CharField('Страна', max_length=30)
    directors = models.ManyToManyField(Actor, verbose_name='Режиссёр', related_name='film_director')
    actors = models.ManyToManyField(Actor, verbose_name='Актёр', related_name='film_actor')
    genres = models.ManyToManyField(Ganer, verbose_name='Жанр')
    category = models.ForeignKey(Category, verbose_name='Категория', on_delete=models.SET_NULL, null=True)
    world_premiere = models.DateField('Примьера в мире', default=date.today)
    budget = models.PositiveIntegerField('Бюджет', default=0, help_text='указывать сумму в доларах')
    fees_in_usa = models.PositiveIntegerField('Сборы в США', default=0, help_text='указывать сумму в доларах')
    fees_in_world = models.PositiveIntegerField('Сборы в Мире', default=0, help_text='указывать сумму в доларах')
    draft = models.BooleanField('Черновик', default=False)
    slug = models.SlugField(max_length=130, unique=True)

    def __str__(self):
        return self.title

    def get_absolute_url(self):
        return reverse('movie_detail', kwargs={'slug': self.slug})

    def get_reviews(self):
        return self.reviews_set.filter(parent__isnull=True)

    class Meta:
        verbose_name = 'Фильм'
        verbose_name_plural = 'Фильмы'


class MovieShots(models.Model):
    """Кадры из фильма"""
    title = models.CharField('Заголовок', max_length=100)
    description = models.TextField('Описание')
    image = models.ImageField('Изображение', upload_to='movie_shots/')
    movie = models.ForeignKey(Movie, verbose_name='Фильм', on_delete=models.CASCADE)

    def __str__(self):
        return self.title

    class Meta:
        verbose_name = 'Кадр из фильма'
        verbose_name_plural = 'Кадры из фильма'


class RatingStar(models.Model):
    """Звезда рейтенга"""
    value = models.PositiveSmallIntegerField('Значение', default=0)

    def __str__(self):
        return self.value

    class Meta:
        verbose_name = 'Звезда рейтенга'
        verbose_name_plural = 'Звезды рейтенга'


class Rating(models.Model):
    """Рейтинг"""
    ip = models.CharField('IP адрес', max_length=15)
    star = models.ForeignKey(RatingStar, on_delete=models.CASCADE, verbose_name='Звезда')
    movie = models.ForeignKey(Movie, on_delete=models.CASCADE, verbose_name='Фильм')

    def __str__(self):
        return f'{self.star} - {self.movie}'

    class Meta:
        verbose_name = 'Рейтинг'
        verbose_name_plural = 'Рейтинги'


class Reviews(models.Model):
    """Отзовы"""
    email = models.EmailField()
    name = models.CharField('Имя', max_length=100)
    text = models.TextField('Сообщение', max_length=5000)
    parent = models.ForeignKey('self', verbose_name='Родитель', on_delete=models.CASCADE, blank=True, null=True)
    movie = models.ForeignKey(Movie, verbose_name='Фильм', on_delete=models.CASCADE)

    def __str__(self):
        return f'{self.name} - {self.movie}'

    class Meta:
        verbose_name = 'Отзыв'
        verbose_name_plural = 'Отзывы'

from django.urls import path
from . import views

urlpatterns = [
    path('', views.MoviesListView.as_view(), name='index'),
    path('filter/', views.FilterMoviesView.as_view(), name='filter'),
    path('movies/<str:slug>', views.MovieDetailView.as_view(), name='movie_detail'),
    path('review/<int:pk>', views.AddReview.as_view(), name='add_review'),
    path('actor/<str:slug>', views.ActorDetailView.as_view(), name='actor_detail'),
]

<form action="{% url 'filter' %}" method="get">
 <div class="left-side">
        <h3 class="sear-head editContent">Год</h3>
        <ul class="w3layouts-box-list">
            {% for movie in view.get_years %}
                <li class="editContent">
                    <input type="checkbox" class="checked" name="year" value="{{ movie.year }}">
                    <span class="span editContent">{{ movie.year }}</span>
                </li>
            {% endfor %}
        </ul>
    </div>
    <button type="submit">Найти</button>
</form>