Telegram error 409

[metbril]

Home Assistant release (hass --version):
0.65.5

Python release (python3 --version):
3.6.3

Component/platform:
telegram_bot

Description of problem:
Since upgrading from 0.64 to 0.65 the telegram bot is flooding my log file with errors. This message appears 5 or 6 times per minute:

2018-03-16 06:57:04 ERROR (MainThread) [homeassistant.components.telegram_bot.polling] wrong status 409

BTW, notifications are working. But it itches me seeing this error.

Expected:
No errors

Problem-relevant configuration.yaml entries and steps to reproduce:

################################################
## Telegram Bot
################################################

telegram_bot:
  - platform: polling
    api_key: !secret telegram_bot_api_key
    allowed_chat_ids:
      - !secret telegram_bot_chat_id_robert

################################################
## Notify
################################################

notify:
  - name: telegram
    platform: telegram
    chat_id: !secret telegram_bot_chat_id_robert

Traceback (if applicable):

Additional info:
Using hassio on rpi 2b
Possibly related to multiple other telegram issues since 0.65 issued at github and/or the community forums.

[metbril]

The issue is occurring since the same time that #12774 started.

[metbril]

Telegram error 409 is

another webhook is active

so perhaps I am accidentally using the api key somewhere else. Will look into this. Strange though that this is only showing up recently.

[metbril]

Don't know what was wrong, but I changed the api key for the bot and added that to my config. This way I was sure the key could not be used somewhere else. Error is gone. So not caused by HA.