Can't build the sample project: More than one file was found with OS independent path 'editor/normalize.css'

[eucliddelphi]

Can't build the sample project once forked the project:

Execution failed for task ':DemoApp:transformResourcesWithMergeJavaResForDebug'.

More than one file was found with OS independent path 'editor/normalize.css'

Any ideas how to deal with? Thanks!