It is a similar issue I think, the error code is the same. Both appear to be fixed by 24w21b.
This is not a duplicate of MC-272313, as that is upon opening realms menu, where this issue states that it occurs upon joining realm. This seems more likely related to the issue I posted MC-272321
It is a similar issue I think, the error code is the same. Both appear to be fixed by 24w21b.