'A tree couldn't be loaded because the prefab is missing' error should contain name of prefab missing and containing terrain

To repro:
0. Create a new project and new scene.
1. Add terrain.
2. Add trees to Terrain (from Free SpeedTrees package, e.g.) using Edit trees -> Add trees.
3. Draw some trees on terrain.
4. Delete tree prefab from Assets.
5. Error appears in Log: 'A tree couldn't be loaded because the prefab is missing'

Actual result: there is no way to detect, what prefab was deleted.
Expected result: Prefab and terrain names are pointed in error, so it's possible to detect, which prefab was deleted from which terrain.