My city is gone!

Hi guys, I was faced with an interesting problem, I took a break for 5 minutes while continuing to play the game, I entered the game again and my city is not in the middle, yes, the city is officially lost, the map is empty, the interesting thing is that the products in the simeleon warehouse are all the same, but my city has disappeared, is there anyone who has had such a problem before, is there anyone who can help? I'm attaching the screenshot, please look.