"World upload failed" when I save and quit to the title screen

I keep getting a message that says World upload failed. Would you like to try again? Everytime I leave any world and no matter how many times I try I cannot sync the world data. I also can’t upload any of my worlds to a realm when the export is complete I get stuck on the uploading world to the cloud screen where the bar sits at full but never actually uploads the world. I’m stuck on this screen until I cancel it.