Delete generated prefab, then reimport the model3.json appear errors in Unity recent versions
Steps:
1. After import sdk, restart Unity.
2. Delete Assets\Live2D\Cubism\Samples\Models\Koharu\Koharu.prefab
3. Reimport Koharu.model3
It appers these errors:

Tested Unity version and SDK version
Unity 2018.4.6f1, Cubism3SdkforUnity-10.unitypackage
Unity 2019.1.14f1, Cubism3SdkforUnity-12.unitypackage
1. After import sdk, restart Unity.
2. Delete Assets\Live2D\Cubism\Samples\Models\Koharu\Koharu.prefab
3. Reimport Koharu.model3
It appers these errors:

Tested Unity version and SDK version
Unity 2018.4.6f1, Cubism3SdkforUnity-10.unitypackage
Unity 2019.1.14f1, Cubism3SdkforUnity-12.unitypackage
0
コメント
If you wish to reimport the model after deleting the existing Prefab, delete the model's .asset as well before undergoing the reimport process.
Thank you in advance for your assistance.