error al enviar imagen con Telebot

2020-03-09 00:31:47,344 (util.py:66 WorkerThread1) ERROR - TeleBot: "ApiException occurred, args=('A request to the Telegram API was unsuccessful. The server returned HTTP 400 Bad Request. Response body:\n[b\'{"ok":false,"error_code":400,"description":"Bad Request: wrong file identifier/HTTP URL specified"}\']',)
Traceback (most recent call last):
  File "/home/pi/.local/lib/python3.7/site-packages/telebot/util.py", line 60, in run
    task(*args, **kwargs)
  File "FRIKIdelBOT.py", line 969, in crear_post
    bot.send_photo(chat_id=message.chat.id, photo=url_imagen_producto, caption=texto_mensaje, parse_mode='HTML')
  File "/home/pi/.local/lib/python3.7/site-packages/telebot/__init__.py", line 639, in send_photo
    parse_mode, disable_notification))
  File "/home/pi/.local/lib/python3.7/site-packages/telebot/apihelper.py", line 276, in send_photo
    return _make_request(token, method_url, params=payload, files=files, method='post')
  File "/home/pi/.local/lib/python3.7/site-packages/telebot/apihelper.py", line 60, in _make_request
    return _check_result(method_name, result)['result']
  File "/home/pi/.local/lib/python3.7/site-packages/telebot/apihelper.py", line 79, in _check_result
    raise ApiException(msg, method_name, result)
telebot.apihelper.ApiException: A request to the Telegram API was unsuccessful. The server returned HTTP 400 Bad Request. Response body:
[b'{"ok":false,"error_code":400,"description":"Bad Request: wrong file identifier/HTTP URL specified"}']
"
2020-03-09 00:31:47,345 (__init__.py:420 MainThread) ERROR - TeleBot: "A request to the Telegram API was unsuccessful. The server returned HTTP 400 Bad Request. Response body:
[b'{"ok":false,"error_code":400,"description":"Bad Request: wrong file identifier/HTTP URL specified"}']"