The layout in layout has no declaration in the base layout folder [error]

Question

After migrating to Android Studio 3.2, API 28, I am getting the following error on my app\'s layout:

The layout in layout has no declaration in the base lay

Answer 1

I had copied the xml files in the folder using Windows Explorer. It seems to have caused an encoding issue. After deleting the files and coping them inside Android Studio, the problem was resolved.