Page not found ( 404) - polls views django tutorial

I'm doing the Django documentation tutorial, in Part 3 ( https://docs.djangoproject.com/en/3.1/intro/tutorial03 / ) where it is said after adding some codes the following:

"Take a look in your browser, at "/polls/34/". It'll run the detail() method and display whatever ID you provide in the URL. Try "/polls / 34 / results/ " and "/polls / 34 / vote/ " too - these will display the placeholder results and voting pages."

A problem is that when accessing http://127.0.0.1:8000/polls/34 / , I get the error:

Page not found (404) Request Method: GET Request URL: http://127.0.0.1:8000/polls/34 / Using the URLconf defined in mysite.urls, Django tried these URL patterns, in this order:

Admin/ polls /[name= 'index'] The current path, polls/ 34/, didn't match any of these.

I've reviewed the code zillions of times, and to me frustrate...

Settings.py

ROOT_URLCONF = 'mysite.urls'

Mysite / urls

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

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

Polls / views

from django.shortcuts import render
from django.http import HttpResponse
# Create your views here.


def index(request):
    return HttpResponse("Hello World. You're at the polls index.")


def detail(request, question_id):
    return HttpResponse("You're looking at question %s." % question_id)


def results(request, question_id):
    response = "You're looking at the results of question %s."
    return HttpResponse(response % question_id)


def vote(request, question_id):
    return HttpResponse("You're voting on question %s." % question_id)

Polls/urls.py

from django.urls import path

from . import views

urlpatterns = [
    # ex: /polls/
    path('', views.index, name='index'),
    # ex: /polls/5/
    path('<int:question_id>/', views.detail, name='detail'),
    # ex: /polls/5/results/
    path('<int:question_id>/results/', views.results, name='results'),
    # ex: /polls/5/vote/
    path('<int:question_id>/vote/', views.vote, name='vote'),
]

Why isn't ta working???

If any code is missing please let me know .

Att: I found that the problem is in PyCharm, since in vs code everything worked right, the problem can be the version of python being used?