Unable to use third party script

Hello, I would like to use third party js script LIFF (Line Frontend Framework)
And I already add the link of js file but i can't call it
The link of js file: https://static.line-scdn.net/liff/edge/2/sdk.js
The library documentation
LINE Front-end Framework | LINE Developers

I've submitted a feature request for Retool to accept a wider range of CDN types and will message back here if there are any updates! :+1: