Improve invoice call template

counter/views.py

@@ -929,6 +929,7 @@ class InvoiceCallView(CounterAdminTabsMixin, TemplateView):
             start_date = datetime(year=timezone.now().year, month=(timezone.now().month+10)%12+1, day=1)
         end_date = (start_date + timedelta(days=32)).replace(day=1, hour=0, minute=0, microsecond=0)
         from django.db.models import Sum, Case, When, F, DecimalField
+        kwargs['start_date'] = start_date
         kwargs['sums'] = Selling.objects.values('club__name').annotate(selling_sum=Sum(
             Case(When(date__gte=start_date,
                 date__lt=end_date,