Telegram bot python erro in webhooks heroku - heroku

Question

I deploy a bot in heroku but it give a erro
2021-04-03T02:56:36.610385+00:00 app[web.1]: 2021-04-03 02:56:36,604 - apscheduler.scheduler - INFO - Scheduler started
2021-04-03T02:56:37.316107+00:00 app[web.1]: 2021-04-03 02:56:37,315 - telegram.ext.updater - ERROR - Error while bootstrap set webhook: Bad webhook: webhook can be set up only on ports 80, 88, 443 or 8443
2021-04-03T02:56:37.316196+00:00 app[web.1]: 2021-04-03 02:56:37,316 - telegram.ext.updater - ERROR - Failed bootstrap phase after 0 retries (Bad webhook: webhook can be set up only on ports 80, 88, 443 or 8443)
2021-04-03T02:47:04.325287+00:00 app[web.1]: 2021-04-03 02:47:04,317 - telegram.ext.updater - ERROR - unhandled exception in Bot:1718309867:updater
Well, i tryed all port 80, 88, 8443 but it give me the same erro again.
My hook and port code:
#change PORT TO HEROKU
PORT = int(os.environ.get('PORT', '8443'))
updater = Updater(SECRET_KEY, use_context=True)
#hook to heroku
updater.start_webhook(listen="0.0.0.0",
port=PORT,
url_path=SECRET_KEY)
updater.bot.set_webhook('https://myapp.herokuapp.com/' + SECRET_KEY)
PS: In localhost work very well

Answer 1

Given the date of this question, I assume that you're using PTB v13.4+. In that case, please see this channel post, i.e. change
updater.start_webhook(listen="0.0.0.0",
port=PORT,
url_path=SECRET_KEY)
updater.bot.set_webhook('https://myapp.herokuapp.com/' + SECRET_KEY)
to
updater.start_webhook(listen="0.0.0.0",
port=PORT,
url_path=SECRET_KEY,
webhook_url='https://myapp.herokuapp.com/' + SECRET_KEY)