you may set `use_modular_headers!` globally in your Podfile, or specify `:modular_headers => true`
在升级老项目的pods的时候更新到最新pods出现报错:[!]ThefollowingSwiftpodscannotyetbeintegratedasstaticlibraries:TheSwiftpod`FirebaseCoreInternal`dependsupon`GoogleUtilities`,whichdoesnotdefinemodules.Tooptintothosetargets