hi i found this error after update xcode 9.3 from 9.2
any suggestions?
ld: warning: directory not found for option '-L/Users/Simone/Library/Developer/Xcode/DerivedData/SocketRocket-gpwoloeyxvlrxmbottacjrujynav/Build/Products/Debug-iphoneos'
ld: warning: ignoring file /Users/Simone/Desktop/Lavori/prove c mac/VanigliaPro_beta_xcode5_ios8_beta_gelaterie_ios11_agendaserver/libSocketRocket.a, file was built for archive which is not the architecture being linked (arm64): /Users/Simone/Desktop/Lavori/prove c mac/VanigliaPro_beta_xcode5_ios8_beta_gelaterie_ios11_agendaserver/libSocketRocket.a
ld: entry point (_main) undefined. for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)