ITMS-90433: Invalid Swift Support - The file libswiftAVFoundation.dylib doesn’t have the correct code signature. Make sure you’re using the correct signature, rebuild your app using the current public (GM) version of Xcode, and resubmit it. Don’t just modify the code signature of libswiftAVFoundation.dylib.
提交AppStore审核，遇到了上述问题，看了大部分的解决方案，大部分都是修改两个属性
TARGETS--> Build Settings-->搜索：
1、ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES
如果该属性设置为NO，则修改为YES
2、SWIFT_VERSION
如果版本低于5.0，则修改为5.0
ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES = YES
SWIFT_VERSION = 5.0
参考地址，可点击该地址详细看具体原因及解决方案
