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Xcode: lexical or preprocessor issue - redefinition of module

I have been looking for a solution to fix the below error.

Lexical or Preprocessor Issue Group - Redefinition of module 'fmt'

Navigation area that shows the errors

FYI, I attached the screenshot to show you the errors. I have gone through all solutions on stackoverflow and github but none of them gives a clear and relevant solution. As you can see, there are 12 errors in two categories. One is Lexical or Preprocessor Issue Group and another is Parse Issue. I have focused mainly on searching for the solution to first category issues but they all Lexical or Preprocessor Issue - ***.h file not found errors. So no helpful one found yet. I am building it in Xcode 13.4.1 after migrating from Xcode 12.

Thank you!

Solution

  • I commented flipper_post_install(installer) in Podfile. Afterwards, it gives another interpolate is not a function error but anyway it cleared the lexical or preprocessor issue error away.