How to fix Bitcode error in Xcode?

After building an app for IOS, and opened the build project on xcode there is a bitcode error. From the fix I see online it says that it Bitcode should be enabled however I have enabled it all and still get the same error. However there is a section I cannot turn on for some reason :

This is the error I receive :

Cannot change config.file to yes : (It’s greyed out)


Solution:

Bug - UnityFramework Bitcode error with Google mobile Ads - Unity Forum