Allow blank senders for first attempts

handler/transactions.py

@@ -222,6 +222,8 @@ class Transactions(util.Base):
         """
         key = f"namemap.{platform}.{platform_buyer}"
         senders = r.smembers(key)
+        if not senders:
+            return None
         senders = util.convert(senders)
         return senders
 
@@ -238,6 +240,9 @@ class Transactions(util.Base):
         :rtype: bool
         """
         senders = self.get_previous_senders(platform, platform_buyer)
+        if senders is None:  # no senders yet, assume it's valid
+            print("Senders is none, assuming its a valid TX!")
+            return True
         if platform_buyer in senders:
             print("Platform buyer is in senders!")
             return True