[Django]-Django didn't return an HttpResponse object

The error is because when the function is called the method type is not POST and it does not find the corresponding HttpResponse object.

def search_page(request):
    form = SearchForm()
    if request.method == "POST":
        f = SearchForm(request.POST)
        if f.is_valid():
            Pets = Pet.objects.filter(animal = f.cleaned_data["text"])
            return HttpResponseRedirect("search.html",{"Pets":Pets},{"form":form})
        else:
            return render_to_response("search.html",{"form":form} , context_instance = RequestContext(request))

    return render_to_response("any.html",{} , context_instance = RequestContext(request))

def addsponser(request):
if request.method == ‘POST’:
# return HttpResponse(request,’error is here’)

    if (request.POST.get('firstname') and
            request.POST.get('lastname') and
            request.POST.get(' email') and
            request.POST.get('phone_Number') and
            request.POST.get('gender') and
            request.POST.get('state') and
            request.POST.get('adress') and
            request.POST.get('postal_code') and
            request.POST.get('town')
            ):
            fname = request.POST.get('firstname')
            lname =  request.POST.get('lastname')
            em = request.POST.get(' email')
            phn = request.POST.get('phone_Number')
            gnd = request.POST.get('gender')
            stt = request.POST.get('state')
            add =  request.POST.get('adress')
            pstc = request.POST.get('postal_code')
            twn = request.POST.get('town')           

            try:
                sponser = Sponsers()
                sponser.firstname = fname
                sponser.lastname = lname
                sponser.email = em
                sponser.Phone_Number = phn
                sponser.gender = gnd
                sponser.state = stt
                sponser.adress = add
                sponser.postal_code = pstc
                sponser.town = twn
                sponser.save()               
                
                messages.success(request, "sponser Added")
                return redirect('sponsers')
            except Exception:
                messages.error(request, "Failed to add sponser")
                return redirect('sponsers')
    else:           
        pass
else:
    return redirect('sponsers')