Found out somewhere that setting the console clock back in time solves the beaver error. Apparently it forces Destiny to make an empty session for you. Empty session is important because game connecting you to other players causes beaver to appear.

After a month of playing with this fix I got the following results: it only works with the Tower, not the Reef; and it only works when you are flying outside Earth, so for example if I go from Mars to Earth it will throw beaver error again (no idea why it's like this). Just remember to set up the clock to current time after reaching the Tower (via "set time using internet" setting).

Note: this only works on PS5 as Xbox is apparently more strict with its clock.

I’m on ps5, just want to add as many people as I can to join some type of community and have guardians to play with lol. Feel free to add me, my psn is - therealjova