Error : linker command failed with exit code 1 (use -v to see invocation)
Error : linker command failed with exit code 1 (use -v to see invocation)
我在尝试将项目从 Objective C 迁移到 swift 并使用 cocoa pods 而不是手动添加的库时遇到此错误，我无法跟踪它所以我感谢解决它的任何帮助。
提前致谢..
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duplicate symbol _OBJC_IVAR_$_TicketViewController._tripSeatingLabel2 in:
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/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-AC0A4978BB9E2178.o
duplicate symbol _OBJC_IVAR_$_TicketViewController._sponsor1 in:
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-99E5E166CAD49D3E.o
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-AC0A4978BB9E2178.o
duplicate symbol _OBJC_IVAR_$_TicketViewController._tripDetailsLabel1 in:
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-99E5E166CAD49D3E.o
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-AC0A4978BB9E2178.o
duplicate symbol _OBJC_IVAR_$_TicketViewController._eventSeatingLabel1 in:
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-99E5E166CAD49D3E.o
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-AC0A4978BB9E2178.o
duplicate symbol _OBJC_IVAR_$_TicketViewController._tripSeatingLabel1 in:
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-99E5E166CAD49D3E.o
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-AC0A4978BB9E2178.o
ld: 93 duplicate symbols for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
您的错误意味着由于某种原因，您的广告连播被复制了两次。
如果您仍在使用用 Obj-c 编写的库，我假设您已经阅读了 how to add a bridging header 的文档。
如果您在代码中没有做错任何事情（例如不小心手动从 pod 复制文件，然后尝试使用 pod！我之前搞砸了，它发生了。）这个错误最经常在 cleaning your project and then deleting derived data.
之前消失
终于在大约1.5天后解决了，TicketViewController.m文件在项目Build phases >> Compile Sources中添加了两次（重复），刚刚删除了其中一个，现在错误消失了，非常感谢感谢@MQLN 的支持
我在尝试将项目从 Objective C 迁移到 swift 并使用 cocoa pods 而不是手动添加的库时遇到此错误，我无法跟踪它所以我感谢解决它的任何帮助。
提前致谢..
duplicate symbol _OBJC_IVAR_$_TicketViewController._ticketPaymentLabel in:
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-99E5E166CAD49D3E.o
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duplicate symbol _OBJC_IVAR_$_TicketViewController._tripNumberLabel in:
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-99E5E166CAD49D3E.o
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duplicate symbol _OBJC_IVAR_$_TicketViewController._ticketCountDownLabel in:
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-99E5E166CAD49D3E.o
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duplicate symbol _OBJC_IVAR_$_TicketViewController._passDescriptionLabel in:
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-99E5E166CAD49D3E.o
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duplicate symbol _OBJC_IVAR_$_TicketViewController._passSerialLabel in:
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duplicate symbol _OBJC_IVAR_$_TicketViewController._eventStartDateLabel in:
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-99E5E166CAD49D3E.o
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-AC0A4978BB9E2178.o
duplicate symbol _OBJC_IVAR_$_TicketViewController._boardingStartDateLabel in:
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-99E5E166CAD49D3E.o
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-AC0A4978BB9E2178.o
duplicate symbol _OBJC_IVAR_$_TicketViewController._ticketExpirationDateLabel in:
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-99E5E166CAD49D3E.o
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-AC0A4978BB9E2178.o
duplicate symbol _OBJC_IVAR_$_TicketViewController._tripTypeLabel in:
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-99E5E166CAD49D3E.o
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-AC0A4978BB9E2178.o
duplicate symbol _OBJC_IVAR_$_TicketViewController._eventPlaceNameLabel in:
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-99E5E166CAD49D3E.o
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duplicate symbol _OBJC_IVAR_$_TicketViewController._tripNumberTitleLabel in:
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-99E5E166CAD49D3E.o
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duplicate symbol _OBJC_IVAR_$_TicketViewController._printedMessageLabel in:
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-99E5E166CAD49D3E.o
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-AC0A4978BB9E2178.o
duplicate symbol _OBJC_IVAR_$_TicketViewController._sponsor4Back in:
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-99E5E166CAD49D3E.o
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-AC0A4978BB9E2178.o
duplicate symbol _OBJC_IVAR_$_TicketViewController._sponsor3Back in:
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-99E5E166CAD49D3E.o
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-AC0A4978BB9E2178.o
duplicate symbol _OBJC_IVAR_$_TicketViewController._sponsor2Back in:
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-99E5E166CAD49D3E.o
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-AC0A4978BB9E2178.o
duplicate symbol _OBJC_IVAR_$_TicketViewController._sponsor1Back in:
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-99E5E166CAD49D3E.o
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-AC0A4978BB9E2178.o
duplicate symbol _OBJC_IVAR_$_TicketViewController._tripDestinationTime in:
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-99E5E166CAD49D3E.o
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duplicate symbol _OBJC_IVAR_$_TicketViewController._tripOriginTime in:
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-99E5E166CAD49D3E.o
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duplicate symbol _OBJC_IVAR_$_TicketViewController._tripDestinationName in:
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-99E5E166CAD49D3E.o
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duplicate symbol _OBJC_IVAR_$_TicketViewController._tripOriginName in:
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-99E5E166CAD49D3E.o
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-AC0A4978BB9E2178.o
duplicate symbol _OBJC_IVAR_$_TicketViewController._mapViewTitle in:
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-99E5E166CAD49D3E.o
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duplicate symbol _OBJC_IVAR_$_TicketViewController._eventTitle in:
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duplicate symbol _OBJC_IVAR_$_TicketViewController._printedPassMessageTitle in:
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duplicate symbol _OBJC_IVAR_$_TicketViewController._eventImage in:
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duplicate symbol _OBJC_IVAR_$_TicketViewController._vendorImage in:
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duplicate symbol _OBJC_IVAR_$_TicketViewController._passVendorImage in:
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duplicate symbol _OBJC_IVAR_$_TicketViewController._qrCodeImage in:
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duplicate symbol _OBJC_IVAR_$_TicketViewController._barCodeImage in:
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duplicate symbol _OBJC_IVAR_$_TicketViewController._swipeMode in:
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duplicate symbol _OBJC_IVAR_$_TicketViewController._flipped in:
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duplicate symbol _OBJC_IVAR_$_TicketViewController.passId in:
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duplicate symbol _OBJC_IVAR_$_TicketViewController._sponsor4 in:
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duplicate symbol _OBJC_IVAR_$_TicketViewController._tripDetailsLabel4 in:
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duplicate symbol _OBJC_IVAR_$_TicketViewController._sponsor3 in:
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/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-AC0A4978BB9E2178.o
duplicate symbol _OBJC_IVAR_$_TicketViewController._tripDetailsLabel3 in:
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-99E5E166CAD49D3E.o
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-AC0A4978BB9E2178.o
duplicate symbol _OBJC_IVAR_$_TicketViewController._eventSeatingLabel3 in:
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-99E5E166CAD49D3E.o
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-AC0A4978BB9E2178.o
duplicate symbol _OBJC_IVAR_$_TicketViewController._tripSeatingLabel3 in:
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-99E5E166CAD49D3E.o
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-AC0A4978BB9E2178.o
duplicate symbol _OBJC_IVAR_$_TicketViewController._sponsor2 in:
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-99E5E166CAD49D3E.o
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-AC0A4978BB9E2178.o
duplicate symbol _OBJC_IVAR_$_TicketViewController._tripDetailsLabel2 in:
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-99E5E166CAD49D3E.o
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-AC0A4978BB9E2178.o
duplicate symbol _OBJC_IVAR_$_TicketViewController._eventSeatingLabel2 in:
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-99E5E166CAD49D3E.o
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-AC0A4978BB9E2178.o
duplicate symbol _OBJC_IVAR_$_TicketViewController._tripSeatingLabel2 in:
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-99E5E166CAD49D3E.o
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-AC0A4978BB9E2178.o
duplicate symbol _OBJC_IVAR_$_TicketViewController._sponsor1 in:
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-99E5E166CAD49D3E.o
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-AC0A4978BB9E2178.o
duplicate symbol _OBJC_IVAR_$_TicketViewController._tripDetailsLabel1 in:
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-99E5E166CAD49D3E.o
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-AC0A4978BB9E2178.o
duplicate symbol _OBJC_IVAR_$_TicketViewController._eventSeatingLabel1 in:
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-99E5E166CAD49D3E.o
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-AC0A4978BB9E2178.o
duplicate symbol _OBJC_IVAR_$_TicketViewController._tripSeatingLabel1 in:
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-99E5E166CAD49D3E.o
/Users/ams/Library/Developer/Xcode/DerivedData/PassApp-ezwbfrgglhkbdwdtwkntnojcfxay/Build/Intermediates.noindex/PassApp.build/Debug-iphonesimulator/PassApp.build/Objects-normal/x86_64/TicketViewController-AC0A4978BB9E2178.o
ld: 93 duplicate symbols for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
您的错误意味着由于某种原因，您的广告连播被复制了两次。
如果您仍在使用用 Obj-c 编写的库，我假设您已经阅读了 how to add a bridging header 的文档。
如果您在代码中没有做错任何事情（例如不小心手动从 pod 复制文件，然后尝试使用 pod！我之前搞砸了，它发生了。）这个错误最经常在 cleaning your project and then deleting derived data.
之前消失终于在大约1.5天后解决了，TicketViewController.m文件在项目Build phases >> Compile Sources中添加了两次（重复），刚刚删除了其中一个，现在错误消失了，非常感谢感谢@MQLN 的支持