Can't Invite/Join Friend, Meaningless Error Code When I Load Up Game

Platform: Xbox Series S

Game: Madden 25 CURRENT GEN

Either when I invite my friend, or my friend invites me, I can't join his game. There's no error, it just plain out doesn't do anything. With that, I also get an Error everytime I start up Madden, but it doesn't say anything else, just ERROR. I click OK everytime and I continue on, but I feel like that might be part of the reason why I can't do anything. Any help?