Origins mod not working when I join a server

Hello, my friend has a modded server with only the origins mod (1.17, not 1.17.1). I got the origins mod, fabric api, and the fabric launcher in the correct version. But when I try join the server there is a list of items. It starts: - us:bluegoldshulker, - us:whitediamondshulker, and so on. And at the bottom, there is a button that says 'Back To Server List'. The background is the default dirt background when loading a world, or joining a server.