post action drops part of the url in django app

I’m building my first ecommerce app, while attempting to gain more skills in Django. I have a form problem, where I am either adding a product, or editing one, using the same Template. My problem is where the action call drops part of the url when submitting POST back to the server ( right now, it’s just the python manage.py runserver).

When I go to edit, I see the url: http://127.0.0.1:8000/mystore/edit-product/4
When I edit the product and click submit, I get the Request URL: http://127.0.0.1:8000/mystore/edit-product/ page not found error.
This error prevents me from returning to the view to determine anything else. please note, I am missing the last part of the url (4), which is the crux of my issue.

It looks like I’m missing something. This is what I have

userprofile/url.py

from django.urls import path
from django.contrib.auth import views as auth_views

from . import views

urlpatterns = [
    path('signup/', views.signup, name='signup'),
    path('logout/', auth_views.LogoutView.as_view(), name='logout'),
    path('login/', auth_views.LoginView.as_view(template_name='userprofile/login.html'), name='login'),
    path('myaccount/', views.myaccount, name='myaccount'),
    path('mystore/', views.my_store, name='my_store'),
    path('mystore/add-product/', views.add_product, name='add-product'),
    path('mystore/edit-product/<int:pk>', views.edit_product, name='edit-product'),
    path('vendors/<int:pk>/', views.vendor_detail, name='vendor_detail')
]

store/urls.py

from django.urls import path
from . import views

urlpatterns =[
    path('search/', views.search, name='search'),
    path('<slug:slug>', views.category_detail, name='category_detail'),
    path('<slug:category_slug>/<slug:slug>', views.product_detail, name='product_detail')
]

core/urls.py <– the base urls

from django.urls import path,include
from .views import frontpage, about

urlpatterns =[
    path('', include('userprofile.urls')),
    path('', frontpage, name='frontpage'),
    path('about', about, name='about'),
    path('', include('store.urls'))
]

Views

@login_required
def add_product(request):
    if request.method == 'POST':
        form = ProductForm(request.POST, request.FILES)
        if form.is_valid():
            title = request.POST.get('title')
            slug = slugify(title)
            product = form.save(commit=False)
            product.user = request.user
            product.slug = slug
            product.save()
            return redirect('my_store')
    else:
        form = ProductForm()
    return render(request, 'userprofile/add-product.html', {
        'title': 'Add Product',
        'form':form
    })

@login_required
def edit_product(request, pk):
    product = Product.objects.filter(user=request.user).get(pk=pk)

    if request.method == 'POST':
        form = ProductForm(request.POST, request.FILES, instance=product)

        if form.is_valid():
            form.save()
            return redirect('my_store')
    else:
        form = ProductForm(instance=product)
    return render(request, 'userprofile/add-product.html', {
        'title': 'Edit Product',
        'form': form
    })

add-product.html (Note: template is used for both add and edit. the variable title distinguishes from the two.)

{% extends 'core/base.html' %}

{% block title %}My Store{% endblock %}

{% block content %}
    <h1 class="text-2xl">My Store</h1>

    <h2 class="mt-6 text-xl ">{{ title }}</h2>

    <form method="post" action="." enctype="multipart/form-data">
        {% csrf_token %}
        {{ form.as_p }}
        <button class="mt-6 py-4 px-8 bg-teal-500 text-white hover:bg-teal-800">Save</button>
    </form>

{% endblock %}

form.py

from django import forms
from .models import Product

class ProductForm(forms.ModelForm):
    class Meta:
        model = Product
        fields = ('category', 'title', 'description', 'price', 'images', )

logs

[26/Dec/2022 20:27:32] "GET /mystore/edit-product/4 HTTP/1.1" 200 2690
Not Found: /mystore/edit-product/
[26/Dec/2022 20:27:47] "POST /mystore/edit-product/ HTTP/1.1" 404 5121

The not found indicates the response from pressing the "submit" button.

Thank you.