Every time I try to go to the nether on a realm, it disconnects me from server. I am playing on Bedrock Edition on mobile. Help would be much appreciated

Every time I try to go to the nether on my friends realm, it just says building terrain for a few seconds before popping up with the message “disconnected from server” on it. Don’t know why this is and if anybody has also encountered this bug and maybe has a fix for it, I would be very grateful for help.