StillBorn WrongMainActivity mutant

Actual Behavior

When i was trying to open a WrongMainActivity mutant of Wikipedia created by MDroid+, Android studio shows me an error in Manifest.

Merging Errors: 
Error: Element activity#org.wikipedia.onboarding.InitialOnboardingActivity at AndroidManifest.xml:205:9-206:68 duplicated with element declared at AndroidManifest.xml:73:9-92:20 app main manifest (this file), line 204 
Error: Validation failed, exiting app main manifest (this file)

Steps to Reproduce the Problem

1. Download source code
2. Change AndroidManifest from app/src/main with the generated by MDroid+
3. Open project in Android Studio
4. Open app/manifest/AndroidManifest.xml
5. Click Merged Manifest tab
6. Scroll to the bottom of right screen