invidio.us is deprecated and as been replaced by a new domain
Please see: https://github.com/iv-org/invidious/issues/1694

Nitter still uses [replaceYouTube = "invidio.us"](https://github.com/zedeus/nitter/blob/master/nitter.conf#L34) in the config, this should be updated to use https://redirect.invidious.io/