Telegram bot: Wrong response from the webhook: 426 Upgrade Required – Telegram API
I'm trying to run Telegram bot using webhook and always have the same error while trying to perform any request e.g. https://api.telegram.org/botTOKEN/getWebhookInfo. My setup: Kubernetes/Istio -> Istio Gateway -> nginx -> python-telegram-bot I issued a certificate with LetsEncrypt and set…