"Mesh normals invalid" is really unhelpful message without the name of the object!
As the title suggests, this log message is not particularly helpful for models containing more than one object.
The message:

Getting the name of the object with invalid normals/bitangents would be much more helpful!
Example: "[Scene 3D] [FBX] : Mesh(car_window) normals are invalid (some values are null) and will be recomputed"
The current workaround to address this is to re-import my model in chunks until I identify the problematic mesh that needs fixing. This process is an unnecessary complication, especially when Substance already identifies the mesh causing the issue.
