Не происходит переход в категории

from django.shortcuts import render
from django.http import HttpResponse
from django.template import loader
from .models import News, Category
 
def news(request):
 
    n = News.objects.all()
    categories = Category.objects.all()
 
    context = {
        "news": n,
        "title": "Список новостей",
        "categories": categories,
    }
    return render(request, template_name='news/news.html', context=context)
 
def get_category(request,category_id):
    n = News.objects.filter(category_id=category_id)
    categories = Category.objects.all()
    category = Category.objects.get(id=category_id)
    return render(request, 'news/category.html', {'news': n, 'categories': categories, 'category': category})

from django.urls import path
from .views import *
 
urlpatterns = [
    path('', news),
    path('category/<int:category_id>/', get_category),
]

from django.db import models
 
# Create your models here.
 
class News(models.Model):
    title = models.CharField(max_length=150, verbose_name = "Наименование")
    source = models.CharField(max_length=150, verbose_name = "Источник")
    content = models.TextField(blank=True, verbose_name = "Контент")
    created_at = models.DateTimeField(auto_now_add=True, verbose_name = "Дата публикации")
    photo = models.ImageField(upload_to='photo/%Y/%m/%d', verbose_name = "Фото", blank = True)
    is_published = models.BooleanField(default=True, verbose_name = "Опубликовано")
    category = models.ForeignKey("Category", on_delete = models.PROTECT, null = True, verbose_name="Категория")
 
 
    def __str__(self):
        return self.title
 
    class Meta:
        verbose_name = "Новость"
        verbose_name_plural = "Новости"
        ordering = ['-created_at','title' ]
 
class Category(models.Model):
    title = models.CharField (max_length=150,db_index=True, verbose_name  = "Наименование категории")
 
    def __str__(self):
        return self.title
 
    class Meta:
        verbose_name = "Категория"
        verbose_name_plural = "Категории"
        ordering = ["title"]