Opening shared link yields blank document and unexpected token error

[Voultapher]

Opening this link https://play.rust-lang.org/?version=nightly&mode=debug&edition=2021&gist=99d1c3ef5b3e76f316d032f75abcf913

Yields:

Unexpected token '<', "<!DOCTYPE "... is not valid JSON

I opened this link a couple days ago, just fine.