我是django的新手，有一个图像问题。当我停留时，当我查看我的博客的主页面与所有文章时，图像一切都很好，但只要我想查看一篇特定的文章，然后由于错误的url/图像开始出现问题

urls.py（project）

from django.contrib import admin
from django.urls import include, path
from django.conf.urls.static import static
from django.conf import settings

urlpatterns = [
    path('admin/', admin.site.urls),
    path('', include('main.urls')),

] + static(settings.STATIC_URL, document_root=settings.STATIC_ROOT)

views.py

from django.shortcuts import render
from .models import *

def index(request):
    posts = Post.objects.all()
    topics = Topic.objects.all()
    return render(request, "index.html", {"posts": posts, "topics": topics})

def post(request, postinf):
    post = Post.objects.get(title=postinf)

    return render(request, "post.html", {"post": post} )

urls.py（app）

from django.urls import path
from . import views

urlpatterns = [
    path('blog', views.index),
    path('blog/<str:postinf>/', views.post, name="postdetail"),
]

settings.py

STATICFILES_DIRS = [
    BASE_DIR / "main/static/",
    
]

STATIC_URL = 'main/static/'

models.py

from django.db import models
from django.contrib.auth.models import User

class Topic(models.Model):
    name = models.CharField(max_length=20)

    def __str__(self):
        return self.name

class Profile(models.Model):
    user = models.OneToOneField(User, null=True, on_delete=models.CASCADE)
    user_avatar = models.ImageField(null=True, blank=True, upload_to="main/static/images")

    def __str__(self):
        return str(self.user)

class Post(models.Model):
    profile = models.ForeignKey(Profile, on_delete=models.DO_NOTHING)
    title = models.CharField(max_length=20, verbose_name="Название поста")
    post_text = models.TextField(max_length=500)
    topic = models.ForeignKey(Topic, on_delete = models.DO_NOTHING)
    time = models.DateField(auto_now=True)
    post_image = models.ImageField(null=True, blank=True, upload_to="main/static/images")

    def __str__(self):
        return self.title

**+没有问题的主页（http://127.0.0.1:8000/blog）与图像

• 当我去http://127.0.0.1:8000/blog/post/得到这个错误的控制台和没有图像**

Not Found: /blog/post/main/static/images/istockphoto-10252.jpg
[19/Apr/2023 01:28:00] "GET /blog/post/main/static/images/istockphoto-10252.jpg HTTP/1.1" 404 2699