'decimal' codec can't encode character u'\u0427' in position 0: invalid decimal Unicode string

    model_formset = modelformset_factory(Estates, form=EstatesForm)
    if request.POST:
        formset = model_formset(request.POST, request.FILES, queryset=Estates.objects.filter(userprofile__user__username__exact=username)) 
        if formset.is_valid():
            estates_objects = formset.save(commit=False) 
            for obj in estates_objects:
                obj.save()
                return HttpResponseRedirect('')
    else:
        formset = model_formset(queryset=Estates.objects.filter(userprofile__user__username__exact=username))
        return render(request, template_name, dict(formset=formset))