Failed to sync world data

I play my minecraft world This morning, after saving and quitting the game, I quit the game then i resintalling Minecraft because i want to download a resource pack when the download completed ,i open the game then I saw my world without a background. When I pressed the A button, it said "Failed to sync world data" and i dont know to get my worlds back... (My cloud save file is fine not the cloud save but the game)
https://1drv.ms/v/s!Av1noECQavVLtkhIYxOtU3WD4RT_