How to fix AttributeError: 'KeyboardButtonUrl' object has no attribute 'data' error in telethon?

Question

Python

Hi all! I am writing a small program using telethon. I've read the manuals but haven't found anything. Here is the required code:

button_data = msg.reply_markup.rows[0].buttons[0].data

Mistake:

button_data = msg.reply_markup.rows[0].buttons[0].data
AttributeError: 'KeyboardButtonUrl' object has no attribute 'data'

And yes, "data" is the last word in the series.
Here is the whole code:

from telethon.sync import TelegramClient


api_id = ''
api_hash = ''
client = TelegramClient('', api_id, api_hash)
client.start()
dlgs = client.get_dialogs()
for dlg in dlgs:
  print(dlg.title)
for dlg in dlgs:
  if dlg.title == '':
    tegmo = dlg
msgs = client.get_messages(tegmo, limit=30)
for msg in msgs:
  if msg.reply_markup is not None:
    button_data = msg.reply_markup.rows[0].buttons[0].data
    message_id = msg.id          
    print(button_data, msg.id)#
from telethon.tl.functions.messages import GetBotCallbackAnswerRequest

resp = client(GetBotCallbackAnswerRequest(
  tegmo,
  message_id,
  data=button_data
  ))