Hey Guys, I am facing problem on django url mapping, I did exactly what my 
couse said and copied the code text exactly,but it throws the error:-


Page not found (404)
Request Method: GET
Request URL: http://127.0.0.1:8000/index

Using the URLconf defined in protwo.urls, Django tried these URL patterns, 
in this order:

   1. admin/
   2. [name='index']

The current path, index, didn't match any of these.

You're seeing this error because you have DEBUG = True in your Django 
settings file. Change that to False, and Django will display a standard 404 
page.




##The code I written in my project are;:-

--------------------------------------------------------------------

<urls.py-first_project>


from django.contrib import admin

from django.urls import path, include


urlpatterns = [

    path('admin/', admin.site.urls),

    path('first_app/', include('first_app.urls'))


]

----------------------------------------------------------------------

-----------------------------------------------------------------------


<urls.py-first_app>


from django.contrib import admin

from django.urls import path

from . import views

urlpatterns = [

    path('index/', views.index, name="index"),

]

-------------------------------------------------------------------------
--------------------------------------------------------------------------
<views.py>

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

# Create your views here.
def index(request):
    return HttpResponse("Hello World")
----------------------------------------------------------------------------
----------------------------------------------------------------------------

<settings.py>

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'first_app'
]

-------------------------------------------------------------------------------

I dont know what to do , I could not find the error plz assist me, I am a 
begginer to this cousre,
Thank You!!

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