Flutter - iOS: Command /bin/sh failed with exit code 255

Question

Good afternoon,

I try to run a Flutter project on iOS, previously successfully run on Android. However, I got an error:

\"x86_64\" is not an allowed valu         


        

Answer 1

This exit code (255) occurs from incorrectly Generated.xcconfig configuration like TRACK_WIDGET_CREATION, FLUTTER_FRAMEWORK_DIR, FLUTTER_BUILD_MODE In archive ios release mode. So before archiving make sure to run flutter clean then flutter build ios for some reason flutter build ios --release doesn't work for me. Then lastly go to Xcode and archive the ios app

Commands

flutter clean then

flutter build ios

Hope it helps.