....

apps/activity/models.py

@@ -243,7 +243,7 @@ class SplitAccount(models.Model):
 
         receiver = SplitAccountReceiver.objects.filter(account=detail.account).first()
         if not receiver:
-            SplitAccountReceiver.objects.create(
+            receiver = SplitAccountReceiver.objects.create(
                 account=detail.account
             )
         return instance, detail, receiver