title: Non-portable path to file yoga-prefix.pch, specified path differs in case. Corrupted file path with duplicated characters
body: <p>I've created a project with <strong>react-native-cli</strong> and installed some pods via <strong>cocoapods</strong> but eveytime I try building the project in Xcode it gives me this strange error: </p>
  
  <p><strong>Non-portable path to file /UUsersCcrysilDDesktopaapp-demoiiosPPodsTTarget Support Filesyyogayyoga-prefix.pch; specified path differs in case from the file name on disk</strong></p>
  
  <p>For some reason the path duplicates the first character for each file/folder and removes all backslashes. I can find this file without problems in the finder and I haven't touched any of the path variables automatically set by cocoapods so I'm not sure what could be causing this. 
  I've also tried deleting all the pods and reinstalling them, deleting the whole /ios folder and rebuilding it but nothing seems to work.</p>
  
  <p>I'm using Xcode 9.2, react-native 0.53.3 and cocoapods 1.4.0 and here's my Podfile incase it might help: 
  <a href="https://nofile.io/f/6oCNuZ6HEYb/Podfile" rel="noreferrer">https://nofile.io/f/6oCNuZ6HEYb/Podfile</a></p>