I found a way which move the sims 4 folder to somewhere on mac and then click repair, there will be a new folder. And then I open the game again but it still loading. Actually, I can play sometimes but when I click going to somewhere on the map, it will loading and not entering the game or when I change the clothes of the sims, and when I finish dressing, it keeps loading and cannot go back to game mode. Sometimes, I cannot even enter the game mode on that day without playing. I try a new one for a week without any mod and just use their game packs and it still only enter the loading screen. Therefore, I always cannot play or cannot play for a long time.