bugfix

Author: yungwine

mytoncore/mytoncore.py

@@ -2975,7 +2975,8 @@ def offers_gc(self, save_offers):
 			if offer_hash not in current_offers_hashes:
 				if isinstance(offer, list):
 					param_id = offer[1]
-					if offer[0] != self.calculate_offer_pseudohash(offer_hash, param_id):  # param has been changed so no need to keep anymore
+					if param_id is not None and offer[0] != self.calculate_offer_pseudohash(offer_hash, param_id):
+						# param has been changed so no need to keep anymore
 						save_offers.pop(offer)
 				else:  # old version of offer in db
 					save_offers.pop(offer)