Very strange error after addind c++ to project [RESOLVED]

I mananaged to solve this one.

I found this topic in the forum:
C++ and blueprints compile but “Failed to load: Can’t find file” on building pixelstreaming project. - Development Discussion / Blueprint Visual Scripting - Unreal Engine Forums

I changed the following in the engine file “CableComponent.uplugin”:

“LoadingPhase” : From “Default” to “PreDefault”.

Is this a bug in the Engine?
I’m using UE5.