Is the Telegram script failing?

Hi, for the past 3 days I've been having problems sending notifications via Telegram, possibly due to the Telegram API and scripts that have been working for 3-4 years. Now I'm getting this error:
failure: Status 400, Bad Request (/tool/fetch; line X).

Script:

:local BotToken "XXXXXXXXXX:XXXXXXXXXXXX-XXXXXXXXXXXXXXXXXXXXXX"
:local ChatID "XXXXXXXXX"
:local parseMode "HTML"
:local DisableWebPagePreview True
:local SendText $MessageText

/tool fetch url="https://api.telegram.org/bot$BotToken/sendMessage\3Fchat_id=$ChatID&parse_mode=$parseMode&text=$SendText&disable_web_page_preview=$DisableWebPagePreview" keep-result=no

Has anyone else who uses this type of notification experienced something similar?
Thanks.