Unable to display map texture properly

unity:2022.3.62f3c1
Using demo: 01-CesiumWorld plugin: Cesium for Unity1.25.0
The default access token checker for all items is √
After loading the model, the map texture cannot be loaded. I don't know how to handle and troubleshoot the problem

Start by reproducing the problem in the 01-CesiumWorld demo with Unity 2022.3.62f3c1 and Cesium for Unity 1.25.0, checking the access-token status and any loading errors. Done means the model loads with its map texture displayed correctly, or the reproduction produces a clear diagnostic for maintainers.

Written by the indexing model from the issue text.