TemplateDoesNotExist at /red

I’m trying to render this html page but it won’t work , I’m currently using Django version 4.2.7 Before I updated, it rendered with other projects, but now it’s not working .I tried DIRS [‘templates’] , DIRS[ BASIC_DIRS] and os.join.path [BASIC_DIRS ,'templates] but it said that the os wasn’t identified in my setting py for my project .

Here is my views.py and I did include my app in the INSTALLED APPS in my settings.py.

from django.shortcuts import render
from django.http import HttpResponse

# `Create your views here.

def index(request):
    return render(request, "blue/index.html")

def greet(request, name):
    return HttpResponse(f"Hello,{name.capitalize()}!")

url.py for my app specifically,

from django.urls import path
from . import views

urlpatterns = [
    path("", views.index, name="index"),
    path("<str:name>", views.greet, name="greet")

my url.py for my project

from django.contrib import admin
from django.urls import path, include

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

Please post the TEMPLATES setting from your settings.py file, along with a description of the directory structure of your project, including the location of the template file.

my settings.py

        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [],
        'APP_DIRS': True,
        'OPTIONS': {
            'context_processors': [

my folder is called Django6 , I created a Django project called place. Inside the place folder, I created an app folder called red . Inside my red folder, I created templates folder that contains my index.html is called blue