telegram send error

While I'm trying to setup telegram notification by running command:

acme.sh --set-notify --notify-hook telegram

this comand failes with error:

{"ok":false,"error_code":400,"description":"Bad Request: can't parse entities: Character '.' is reserved and must be escaped with the preceding '\'"}
Error sending message using telegram_send
Error setting /path/to/acme.sh/sbin/notify/telegram.sh.
Cannot set notify hook to: telegram

Some 'dots' in sended text are not escaped !