Often Game Crashing

As of lately, starting at about the time the Fortune Island DLC released, mine and a lot of other players’ games have been crashing suddenly and without reason every couple of hours or so. I have tried to specify the reason for the crashes, but I don’t understand why this is happening. There must be a bug that was introduced with the update.
Game devs, please fix!! It’s a very annoying bug and it ruins our gameplay. Thanks!