I found the solution of this problem if you getting same problem as me you should add these code lines to your pod file :
if target.name == 'abseil'
Pod::UI.puts "Workaround: Configuring abseil to use gnu++14 language standard for cocoapods 1.16+ compatibility".yellow
Pod::UI.puts " Remove workaround when upstream issue fixed https://github.com/firebase/firebase-ios-sdk/issues/13996".yellow
target.build_configurations.each do |config|
config.build_settings['CLANG_CXX_LANGUAGE_STANDARD'] = 'gnu++14'
end
end
I found this solution on GitHub you can go there with this link : Github Link