online playing "upload failed"

[WestForest]

When playing online, Save City shows upload failure

[Naufhal]

Probably Your Internet Is Interrupted.
Or Your City Is Corrupted?

[WestForest]

The Internet is connected, and the blocks have just been occupied, and before they have begun to build, they indicate that upload failed

[BartłomiejW]

When playing online, Save City shows upload failure

It's the same for me, the online worlds doesn't
want to save and sometimes kicks me out of the game.
I don't know what to do, does anyone know what to do about it?