Update app.py

app.py

@@ -409,8 +409,8 @@ def get_my_chain_send(sender_name=None):
         r = requests.get(f'{main_balance}{sender_name}.json') 
         print (f'r={r.text}')
         mychain_send = MyChain(chain_load=main_balance,load=r.text)
-        response = {'chain': mychain_send.chain,
-                    'length': len(mychain_send.chain)}
+        response = [{'chain': mychain_send.chain,
+                    'length': len(mychain_send.chain)}]
         print (f'response={response}')
         message = f"Blockchain loaded from: {main_balance}{sender_name}.json"
         return response,message