Page not found (404) Request Method: POST Request URL: http://127.0.0.1:8000/accounts/signup/signup

I am getting page not found 404 ERROR, in Django. Even though i have mapped the URL correctly both in the main app and this app.

urlpatterns = [
    path('',views.mainpage,name='main'),
    path("signup/",views.signup,name='signup'),
    path("login/",views.login,name='login'),
    path("logout/",views.logout,name='logout')
]

Now the below url is of the main app where I have included the urls.py of sub-app which is accounts.

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

This is the URL mapping of the app name accounts, used to handle the account and registration details.

The error is in this path

http://127.0.0.1:8000/accounts/signup/signup

Where as it works finely up to the below mentioned path.

http://127.0.0.1:8000/accounts/signup

Can anyone suggest me or help me finding out where it going wrong. What it should happen is,

http://127.0.0.1:8000/accounts/signup

after this path when we click submit it should create a user in database and return or redirect the page to login page, with a message user created.

Below is the code of views.py of the accounts app.

def signup(request):
    if request.method == 'POST':
        first_name = request.POST['first_name']
        last_name = request.POST['last_name']
        username = request.POST['username']
        email = request.POST['email']
        password1 = request.POST['password1']
        user = User.objects.create_user(
            firstname=first_name, lastname=last_name, username=username, email=email, password=password1)
        user.save()
        print("USER CREATED SUCCESSFULLY")
        return redirect('/login.html')

Anyone help me out what is going wrong. Thank you.