sudo gem install cocoapods ์คํ ์ ์๋ฌ ERROR: Error installing cocoapods: ERROR: Failed to build gem native extensions sudo gem install cocoapods ์ ERROR log sudo gem install cocoapods Building native extensions. This could take a while... ERROR: Error installing cocoapods: ERROR: Failed to build gem native extension. current directory: /Library/Ruby/Gems/2.6.0/gems/ffi-1.15.5/ext/ffi_c /System/Libr..