Failing in parsing the message
It looks like url format for HTTP request is wrong.
Try including “https://” in starting in url, also include “/” after “api.telegram.org” in url.
e.g., " https://api.telegram.org/bot123456:ABC-DEF1234ghIkl-zyx57W2v1u123ew11/sendMessage "
If still doesn’t work, share the snapshot of python code.