Update chatchain.py

chatchain.py

@@ -237,7 +237,7 @@ class MyChainSend:
             'message': message,
         }
         transaction = crypt.encrypt_trans(transaction,priv_key)
-        self.pending_transactions.append(transaction)
+        self.pending_transactions.append(str(transaction))
     def proof_of_work(self, previous_proof):
         new_proof = 1
         check_proof = False
@@ -439,7 +439,7 @@ class MyChainRec:
         }
         transaction = crypt.encrypt_trans(transaction,pub_key)
 
-        self.pending_transactions.append(transaction)
+        self.pending_transactions.append(str(transaction))
     def proof_of_work(self, previous_proof):
         new_proof = 1
         check_proof = False