How to reproduce:
1. Download the attached project or import it from AssetStore -> Crashy Racing
2. Switch platform to Android/iOS or Mac standalone (that is what I tested)
3. Build and run Main scene
Result: Build fails with no clear reason just this error "Component could not be loaded when loading game object. Cleaning up!"

Note1: I get this error when I simply Build the project, but it doesn't fail.
Note2: Issue is not project specific as I get it also with [UseCases] 2D Endless Runner project from collab.
Note3: Issue is not reproducible with newly created empty project.

Note4: Build & Run fails on all platforms (!) and no build files are output at all when this error occurs. Just the 'build' option works okay.

Reproducible: 2019.3.0a4, 2019.3.0a6
Not reproducible: 2019.3.0a3