Bad webhook error on start up

I just deployed this to Heroku and I think I got everything right but I’m getting an error when the app tries to start… telegram.error.BadRequest: Bad webhook

I’ve checked the URL as per the first line of output but there’s not many other clues… it’s running on a free dyno if that makes a difference?

app[web.1]: Running bot in webhook mode. Make sure that this url is correct: https://<app-name>.herokuapp.com/
app[web.1]: Error while bootstrap set webhook: Bad webhook: webhook can be set up only on ports 80, 88, 443 or 8443
app[web.1]: Failed bootstrap phase after 0 retries (Bad webhook: webhook can be set up only on ports 80, 88, 443 or 8443)
app[web.1]: unhandled exception in Bot:1782207609:updater
app[web.1]: Traceback (most recent call last):
app[web.1]:   File "/app/.heroku/python/lib/python3.6/site-packages/telegram/ext/updater.py", line 236, in _thread_wrapper
app[web.1]:     target(*args, **kwargs)
app[web.1]:   File "/app/.heroku/python/lib/python3.6/site-packages/telegram/ext/updater.py", line 602, in _start_webhook
app[web.1]:     ip_address=ip_address,
app[web.1]:   File "/app/.heroku/python/lib/python3.6/site-packages/telegram/ext/updater.py", line 674, in _bootstrap
app[web.1]:     bootstrap_interval,
app[web.1]:   File "/app/.heroku/python/lib/python3.6/site-packages/telegram/ext/updater.py", line 530, in _network_loop_retry
app[web.1]:     onerr_cb(telegram_exc)
app[web.1]:   File "/app/.heroku/python/lib/python3.6/site-packages/telegram/ext/updater.py", line 652, in bootstrap_onerr_cb
app[web.1]:     raise exc
app[web.1]:   File "/app/.heroku/python/lib/python3.6/site-packages/telegram/ext/updater.py", line 516, in _network_loop_retry
app[web.1]:     if not action_cb():
app[web.1]:   File "/app/.heroku/python/lib/python3.6/site-packages/telegram/ext/updater.py", line 640, in bootstrap_set_webhook
app[web.1]:     drop_pending_updates=drop_pending_updates,
app[web.1]:   File "/app/.heroku/python/lib/python3.6/site-packages/telegram/bot.py", line 127, in decorator
app[web.1]:     result = func(*args, **kwargs)
app[web.1]:   File "/app/.heroku/python/lib/python3.6/site-packages/telegram/bot.py", line 2863, in set_webhook
app[web.1]:     result = self._post('setWebhook', data, timeout=timeout, api_kwargs=api_kwargs)
app[web.1]:   File "/app/.heroku/python/lib/python3.6/site-packages/telegram/bot.py", line 260, in _post
app[web.1]:     f'{self.base_url}/{endpoint}', data=data, timeout=effective_timeout
app[web.1]:   File "/app/.heroku/python/lib/python3.6/site-packages/telegram/utils/request.py", line 354, in post
app[web.1]:     **urlopen_kwargs,
app[web.1]:   File "/app/.heroku/python/lib/python3.6/site-packages/telegram/utils/request.py", line 272, in _request_wrapper
app[web.1]:     raise BadRequest(message)
app[web.1]: telegram.error.BadRequest: Bad webhook: webhook can be set up only on ports 80, 88, 443 or 8443

[stikhonchuk]

Вот такая штука сработала (по мотивам https://github.com/python-telegram-bot/python-telegram-bot/wiki/Webhooks#heroku)

import os

from telegram.ext import Updater

from handlers import setup_dispatcher
from settings import TELEGRAM_TOKEN, HEROKU_APP_NAME

PORT = int(os.environ.get('PORT', '8443'))

# Setup bot handlers
updater = Updater(TELEGRAM_TOKEN)

dp = updater.dispatcher
dp = setup_dispatcher(dp)

# Run bot
if not HEROKU_APP_NAME:  # pooling mode
    print("Can't detect 'HEROKU_APP_NAME' env. Running bot in pooling mode.")
    print("Note: this is not a great way to deploy the bot in Heroku.")

    updater.start_polling()
    updater.idle()

else:  # webhook mode
    print(f"Running bot in webhook mode. Make sure that this url is correct: https://{HEROKU_APP_NAME}.herokuapp.com/")
    updater.start_webhook(
        listen="0.0.0.0",
        port=PORT,
        url_path=TELEGRAM_TOKEN,
        webhook_url=f"https://{HEROKU_APP_NAME}.herokuapp.com/{TELEGRAM_TOKEN}"
    )

#    updater.bot.set_webhook(f"https://{HEROKU_APP_NAME}.herokuapp.com/{TELEGRAM_TOKEN}")
    updater.idle()

[ohld]

YES! It worked. Thanks, @stikhonchuk. Final commit: https://github.com/ohld/telegram-support-bot/commit/ab9638e9deb416bf86a28b72dda9d81273aa758f