Google Photorealtistic Texture grey

Hello,
I am using Cesium in Unreal 5.5.4, I am using Google Photorealtistic 3d Tiles and the texture for Google Earth disappread and it is just grey. This happend to most of my Projects not just one.

Can you Please help me

I got these error displayed in the output log:
LogMaterial: Warning: [AssetLog] C:\Program Files\Epic Games\UE_5.5\Engine\Plugins\Marketplace\Cesiumfo27e669801be6V8\Content\Materials\M_CesiumBaseMaterial.uasset: Failed to compile Material for platform PCD3D_SM6, Default Material will be used in game.
LogMaterial: Warning: [AssetLog] C:\Program Files\Epic Games\UE_5.5\Engine\Plugins\Marketplace\Cesiumfo27e669801be6V8\Content\Materials\Instances\MI_CesiumThreeOverlaysAndClipping.uasset: Failed to compile Material Instance with Base M_CesiumBaseMaterial for platform PCD3D_SM6, Default Material will be used in game.
LogMaterial: Warning: [AssetLog] C:\Program Files\Epic Games\UE_5.5\Engine\Plugins\Marketplace\Cesiumfo27e669801be6V8\Content\Materials\Instances\MI_CesiumThreeOverlaysAndClippingTranslucent.uasset: Failed to compile Material Instance with Base M_CesiumBaseMaterial for platform PCD3D_SM6, Default Material will be used in game.
LogMaterial: Warning: [AssetLog] C:\Program Files\Epic Games\UE_5.5\Engine\Plugins\Marketplace\Cesiumfo27e669801be6V8\Content\Materials\Instances\MI_CesiumThreeOverlaysAndClippingAndWater.uasset: Failed to compile Material Instance with Base M_CesiumBaseMaterial for platform PCD3D_SM6, Default Material will be used in game.
LogCesium: Warning: “Enable World Bounds Checks” in the world settings is currently enabled. Please consider disabling it to avoid potential issues.

Hi @rancke, welcome to the community!
One possibility here is that you have inadvertently edited the default material that Cesium for Unreal uses to render tilesets. It’s pretty easy to do accidentally. Try uninstall the Cesium for Unreal plugin from the Epic Launcher and then reinstalling it.