Why Nginx add query string ?next= to my django url path

Hi. i followed digitalocean tutorial at https://www.digitalocean.com/community/tutorials/how-to-set-up-django-with-postgres-nginx-and-gunicorn-on-ubuntu-20-04

my view use @login_required

everythings fine when i start server with command

(env)$ python manage.py runserver 0.0.0.0:8000 and (env)$ gunicorn --bind 0.0.0.0:8000 lskweb.wsgi

In final step… Nginx proxy pass to gunicorn. but when i logged in , django will redirect to /?next=/home

urls.py

from central import views as c_view
from django.contrib.auth import views as auth_views
from django.urls import include, path

urlpatterns = [
    path('login/', auth_views.LoginView.as_view(template_name='central/login.html'), name='login'),
    path('logout/', auth_views.LogoutView.as_view(next_page='login'), name='logout'),
    path('home/', c_view.home, name='home'),
    ]

central/views.py

@login_required
def home(request):
    data = {}
    return render(request, 'central/home.html', data)

central/templates/central/home.html

<h1>Home</h1>
  <a href="/logout">Logout</a>
  <hr>
  <h3><a href="/mails">Mails</a></h3>
  <h3><a href="/insure">Insure</a></h3>
  <h3><a href="/redbooks">Redbooks</a></h3>
  <h3><a href="/dshop">Dshop</a></h3>

=====

I removed @login_required from def home Nginx not add query string ?next= yet, but not my purpose becuse i want to secure my views

this is my django webapp link

Thank you.