我想將mobile.connect.framework添加到現有項目。在添加框架之前，該應用程序正在構建並正常運行。但是，一旦我添加框架，就會給出重複的符號_OBJC_CLASS _ $ _ Base64錯誤。我經歷了很多帖子，如Duplicate Symbol _OBJC_CLASS_$_LoginController
和How duplicate symbol problem arises。但無法找到解決方案。 請幫我解決這個問題。它已經消耗了我半天。
錯誤： - ld: warning: directory not found for option '-L/Users/shailendra.suriyal/Documents/MyProjects/taxi_ios_client/UberNewUser/ExternalLib/CardIO' duplicate symbol _OBJC_CLASS_$_Base64 in: /Users/shailendra.suriyal/Library/Developer/Xcode/DerivedData/Muri-hadqxhhslzvmwfddwlthosrdljjy/Build/Intermediates/Muri.build/Debug-iphonesimulator/Muri.build/Objects-normal/x86_64/Base64.o /Users/shailendra.suriyal/Documents/MyProjects/taxi_ios_client/UberNewUser/ExternalLib/FrameWork/mobile.connect.framework/mobile.connect duplicate symbol _OBJC_METACLASS_$_Base64 in: /Users/shailendra.suriyal/Library/Developer/Xcode/DerivedData/Muri-hadqxhhslzvmwfddwlthosrdljjy/Build/Intermediates/Muri.build/Debug-iphonesimulator/Muri.build/Objects-normal/x86_64/Base64.o /Users/shailendra.suriyal/Documents/MyProjects/taxi_ios_client/UberNewUser/ExternalLib/FrameWork/mobile.connect.framework/mobile.connect ld: 2 duplicate symbols for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation)