For some people logging out and back in has helped but I've seen multiple beehaw users state that this doesn't work for them.
This seems to be because beehaw is intentionally staying on an old Lemmy version.
Not sure how the Dev wants to handle this since they've got enough work on their hands and this issue should resolve itself once beehaw upgrades.
For now your best bet is to try re-logging and if that doesn't work to roll back to a previous version of Eternity.