Can I limit the loading area? Not to load a entire globe?

When using a tile service that only provides Korean zones, errors continue to occur because cesiumjs was trying to read the map service of the entire globe.

An error occurred in “gv”: Failed to obtain image tile X: 32 Y: 1 Level: 6.

We tried to limit the map using the example below, but it still seems to load and cut the entire glove.

Is there a way to limit the area of a country without loading the entire globe?

What kind of tile service do you use?
if WebMapTileServiceImageryProvider, you can limit by specifying the rectangle property of the provider.

see this.