RuntimeError: Terrain tile doesn't exist

Create the tif file as a zip file, upload it to Cesiumion, and create it as a Terrain Provider.

The following error occurs when using this Terrain Provider:

An error occurred in "CesiumTerrainProvider": Failed to obtain terrain tile X: 6991 Y: 1192 Level: 12. Error message: "RuntimeError: Terrain tile doesn't exist
    at new RuntimeError (
    at requestTileGeometry$1 (
    at CesiumTerrainProvider.requestTileGeometry (
    at s (
    at requestTileGeometry (
    at processTerrainStateMachine (
    at GlobeSurfaceTile.processStateMachine (
    at GlobeSurfaceTileProvider.loadTile (
    at processSinglePriorityLoadQueue (
    at processTileLoadQueue ("

This Asset id is 1406360.
It is believed to occur in the border area of terrain provider. Do I need to modify the tif file to fix this?