end getaway not generating

so i had this world since the snapshots and everything is perfect but recently i updated it to the newer minecraft version 1.16.1 and it was time for me to kill the ender dragon so i went to the end and killed at first i didnt realized that the end getaway did not generated so i went back to my base and when it was time to go for my elytras i search the whole island and the getaway didnt generated so i was like ok no problem let me kill his again i may get it this time so i kill him and still didnt generate, can yo guys fix this because i want to get my elytra well thats all have a great day whoever is reading this thanks for the update is really cool all the new stuff is just that bug but overall is fine