网易云信SDK示例demo下载，运行报错/Toolchains/XcodeDefault.xctoolchain/usr/lib/arc/libarclite_iphoneos.a

pod install 后报错

 

File not found: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/arc/libarclite_iphonesimulator.a