diff --git a/apps/pg/models.py b/apps/pg/models.py
index b275a21..b9a1cf2 100644
--- a/apps/pg/models.py
+++ b/apps/pg/models.py
@@ -50,7 +50,7 @@ class ChargeRequest(models.Model):
     def request_sale(self):
         pna_client = PNAClient()
         description = 'from addwin ipg'
-        pna_callback_url = f'https://ipg.addwin.ir/page/pna_callback/{self.pk}/'
+        pna_callback_url = f'https://ipg.addwin.ir/page/pna_callback/{self.uuid}/'
         response = pna_client.request_normal_sale(self.amount, description, pna_callback_url, order_id=self.id)
 
         self.pna_status_code = response['status']
diff --git a/apps/pg/views.py b/apps/pg/views.py
index 9daef3f..912eb1c 100644
--- a/apps/pg/views.py
+++ b/apps/pg/views.py
@@ -49,7 +49,13 @@ class ChargeRequestView(UpdateView):
 
         # try:
         charge_request.request_sale()
-        return HttpResponseRedirect(charge_request.get_pna_redirect_url())
+        pna_redirect_url = charge_request.get_pna_redirect_url()
+        if pna_redirect_url:
+            return HttpResponseRedirect(pna_redirect_url)
+        else:
+            messages.error(self.request, 'can not redirect to pna')
+            # TODO: redirect to error page
+            return reverse('pg:charge-request-view', kwargs={'uuid': charge_request.uuid})
 
         charge_request.charge_wallet_balance()
         # transaction = Transaction.objects.create(