Duplicate output file

I built my first app and works fine.
I found a minor bug and i tried to fix it.
Simply my app didn't have permission to access the camera.
Found the solution adding Privacy - camera usage description on info.plist.
But when I try to make a new build the process fails.
3 errors found
One of this is:
duplicate output file
'/Users/MYUSERNAME/Library/Developer/Xcode/DerivedData/APPNAME-LONGCODE/Build/Products/Debug-iphonesimulator/APPNAME.app/Info.plist'

The capitalizes strings are used to understand the path
I deleted the added string on 'info.plist', but the build process failed again
Suggestion?

First try to do an option-clean build folder.
And restart Xcode after if that's not enough.
Duplicate output file
 
 
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