If I create new listing and upload an image, there is no issue. But When I try to reupload new or same image, it does not get uploaded and its url is pointing to not found file (media/FILENAME)

If I just create and, the image gets uploaded and stored at the right directory (media/images).

As soon as I try to upload the same or new image,the image does not get uploaded and its url is incorrect or pointing to the nonexistent address (media/FILENAME)

My model

class Listing(models.Model):
    title = models.CharField(max_length=64)
    image = models.ImageField(blank=True, null=True, upload_to="images/")
    created = models.DateTimeField(auto_now_add=True)

    def __str__(self):
        return f"Listing {self.id}: {self.title}"
def create(request):

    if request.method == "POST":
        form = NewListingForm(request.POST, request.FILES)
        listings = Listing.objects.all()

        if form.is_valid():
            title = form.cleaned_data["title"]
            image = form.cleaned_data["image"]
            if image is None:
                image = ""
           
            try:
               listing = Listing.objects.get(title=title)
            except Listing.DoesNotExist:
                listing = None

            if  listing is None and form.cleaned_data["edit"] is False:
                new_listing = Listing.objects.create(title=title, image=image)
                new_listing.save()
                return HttpResponseRedirect(reverse("auctions:listing", args=(new_listing.id,)))
            elif form.cleaned_data["edit"] is True:
                existing_listing = Listing.objects.filter(title=title)
                existing_id = Listing.objects.get(title=title).id
               
                existing_listing.update(title=title, image=image)
                return HttpResponseRedirect(reverse("auctions:listing", args=(existing_id,)))
            else:
                return render(request, "auctions/create.html", {
                    "form": form,
                    "error": "Duplicate Item.",
                    "existing_title": title,
                })
        else:
            return render(request, "auctions/create.html", {
            "form": NewListingForm()
            })

    else:
        return render(request, "auctions/create.html", {
            "form": NewListingForm()
        })

class NewListingForm(forms.Form):
    title = forms.CharField(label="Title",widget=forms.TextInput(attrs={"class": "form-control"}))
    image = forms.ImageField(required=False)

def edit(request, listing_id):
    listing = Listing.objects.get(pk=listing_id)
    if listing is None:
        return render(request, "auctions/index.html", {
            "error": "Invalid Access."
        })
    else:
        form = NewListingForm()
        form.fields["title"].initial = listing.title

        form.fields["image"].initial = listing.image
        return render(request, "auctions/create.html", {
            "form": form,
            "edit"