ITMS-90424: Invalid Swift Support - The SwiftSupport folder is empty. Rebuild your app using the current public (GM) version of Xcode and resubmit it.
意思是SwiftSupport文件为空
解决方法

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project 中找到Build Options > Always Embed Swift Standard Libraries 为YES

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Targets 中找到 Build Options > Always Embed Swift Standard Libraries 为YES