Some of the realm mini games won't load.

I was wanting to play the mini-game Bow Blitz on Java Realms and like most other mini-games they won't load. I have tried restarting minecraft, i have tried selecting different minigames and went back to the mini game, and i have tried to switch between worlds and mini games and it still won't load. I think it's because some of the minigames are outdated but i'm not sure and would like some help thanks! 

It would sit on the loading screen and then after a while just say An error occurred. Please try again later. which we have tried.