ios app store rejection - Your app uses the “prefs:root=” non-public URL scheme

Question

I recently uploaded a new version of my app to itunes connect. My app got rejected with this note

Your app uses the \"prefs:root=\" non-public URL s

Answer 1

To find out which library is using that permission, you can use this command in terminal

strings  | grep 'prefs:root'

to search in dependencies compiled files, if you have no luck with search in Xcode.