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

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 value for option "ios-arch".
Run 'flutter -h' (or 'flutter <command> -h') for available flutter commands and options.
Failed to build /Users/user123/Downloads/my_app.
Command /bin/sh failed with exit code 255
I tried different solutions offered here about a variety of errors "Command /bin/sh failed with exit code XXX". But, none of them helped.
Also, I checked solutions on GitHub:
https://github.com/flutter/flutter/issues/9814.
At the same time, it is not completely clear for me how to implement them into iOS project.
I will be appreciated for any support.
Sincerely,
Maryna
Update: these are the results of the commands:
$ flutter run --verbose
[ +53 ms] executing: [/Users/user143726/Downloads/flutter/] git rev-parse --abbrev-ref --symbolic #{u}
[ +60 ms] Exit code 0 from: git rev-parse --abbrev-ref --symbolic #{u}
[ ] origin/beta
[ ] executing: [/Users/user143726/Downloads/flutter/] git rev-parse --abbrev-ref HEAD
[ +10 ms] Exit code 0 from: git rev-parse --abbrev-ref HEAD
[ ] beta
[ ] executing: [/Users/user143726/Downloads/flutter/] git ls-remote --get-url origin
[ +8 ms] Exit code 0 from: git ls-remote --get-url origin
[ ] https://github.com/flutter/flutter.git
[ ] executing: [/Users/user143726/Downloads/flutter/] git log -n 1 --pretty=format:%H
[ +12 ms] Exit code 0 from: git log -n 1 --pretty=format:%H
[ ] 5ab9e70727d858def3a586db7fb98ee580352957
[ ] executing: [/Users/user143726/Downloads/flutter/] git log -n 1 --pretty=format:%ar
[ +13 ms] Exit code 0 from: git log -n 1 --pretty=format:%ar
[ ] 3 weeks ago
[ +1 ms] executing: [/Users/user143726/Downloads/flutter/] git describe --match v*.*.* --first-parent --long --tags
[ +14 ms] Exit code 0 from: git describe --match v*.*.* --first-parent --long --tags
[ ] v0.8.2-0-g5ab9e7072
[ +508 ms] executing: /Users/user143726/Library/Android/sdk/platform-tools/adb devices -l
[ +32 ms] Exit code 0 from: /Users/user143726/Library/Android/sdk/platform-tools/adb devices -l
[ ] List of devices attached
[ +8 ms] executing: idevice_id -h
[ +98 ms] /usr/bin/xcrun simctl list --json devices
[ +449 ms] No connected devices.
[ ] Run 'flutter emulators' to list and start any available device emulators.
[ ] If you expected your device to be detected, please run "flutter doctor" to diagnose
[ ] potential issues, or visit https://flutter.io/setup/ for troubleshooting tips.
[ +18 ms] "flutter run" took 1,014ms.
#0 throwToolExit (package:flutter_tools/src/base/common.dart:26:3)
#1 RunCommand.validateCommand
(package:flutter_tools/src/commands/run.dart:239:7)
<asynchronous suspension>
#2 FlutterCommand.verifyThenRunCommand
(package:flutter_tools/src/runner/flutter_command.dart:350:11)
<asynchronous suspension>
#3 FlutterCommand.run.<anonymous closure>
(package:flutter_tools/src/runner/flutter_command.dart:306:33)
<asynchronous suspension>
#4 AppContext.run.<anonymous closure>
(package:flutter_tools/src/base/context.dart:142:29)
<asynchronous suspension>
#5 _rootRun (dart:async/zone.dart:1124:13)
#6 _CustomZone.run (dart:async/zone.dart:1021:19)
#7 _runZoned (dart:async/zone.dart:1516:10)
#8 runZoned (dart:async/zone.dart:1463:12)
#9 AppContext.run (package:flutter_tools/src/base/context.dart:141:18)
<asynchronous suspension>
#10 FlutterCommand.run (package:flutter_tools/src/runner/flutter_command.dart:297:20)
#11 CommandRunner.runCommand (package:args/command_runner.dart:194:27)
<asynchronous suspension>
#12 FlutterCommandRunner.runCommand.<anonymous closure> (package:flutter_tools/src/runner/flutter_command_runner.dart:347:21)
<asynchronous suspension>
#13 AppContext.run.<anonymous closure> (package:flutter_tools/src/base/context.dart:142:29)
<asynchronous suspension>
#14 _rootRun (dart:async/zone.dart:1124:13)
#15 _CustomZone.run (dart:async/zone.dart:1021:19)
#16 _runZoned (dart:async/zone.dart:1516:10)
#17 runZoned (dart:async/zone.dart:1463:12)
#18 AppContext.run (package:flutter_tools/src/base/context.dart:141:18)
<asynchronous suspension>
#19 FlutterCommandRunner.runCommand (package:flutter_tools/src/runner/flutter_command_runner.dart:303:19)
<asynchronous suspension>
#20 CommandRunner.run.<anonymous closure> (package:args/command_runner.dart:109:29)
#21 new Future.sync (dart:async/future.dart:224:31)
#22 CommandRunner.run (package:args/command_runner.dart:109:11)
#23 FlutterCommandRunner.run (package:flutter_tools/src/runner/flutter_command_runner.dart:211:18)
#24 run.<anonymous closure> (package:flutter_tools/runner.dart:59:20)
<asynchronous suspension>
#25 AppContext.run.<anonymous closure> (package:flutter_tools/src/base/context.dart:142:29)
<asynchronous suspension>
#26 _rootRun (dart:async/zone.dart:1124:13)
#27 _CustomZone.run (dart:async/zone.dart:1021:19)
#28 _runZoned (dart:async/zone.dart:1516:10)
#29 runZoned (dart:async/zone.dart:1463:12)
#30 AppContext.run (package:flutter_tools/src/base/context.dart:141:18)
<asynchronous suspension>
#31 runInContext (package:flutter_tools/src/context_runner.dart:42:24)
<asynchronous suspension>
#32 run (package:flutter_tools/runner.dart:50:10)
#33 main (package:flutter_tools/executable.dart:52:9)
<asynchronous suspension>
#34 main (file:///b/build/slave/Mac_Flutter_Packaging/build/archive/flutter/packages/fl utter_tools/bin/flutter_tools.dart:8:3)
#35 _startIsolate.<anonymous closure> (dart:isolate/runtime/libisolate_patch.dart:287:32)
#36 _RawReceivePortImpl._handleMessage (dart:isolate/runtime/libisolate_patch.dart:171:12)
$ flutter analyze
Analyzing my_app...
info • Unused import: 'package:my_app/main.dart' • test/widget_test.dart:10:8 • unused_import
1 issue found. (ran in 8.4s)
$ flutter doctor -v
[✓] Flutter (Channel beta, v0.8.2, on Mac OS X 10.13.6 17G65, locale en)
• Flutter version 0.8.2 at /Users/user143726/Downloads/flutter
• Framework revision 5ab9e70727 (3 weeks ago), 2018-09-07 12:33:05 -0700
• Engine revision 58a1894a1c
• Dart version 2.1.0-dev.3.1.flutter-760a9690c2
[✓] Android toolchain - develop for Android devices (Android SDK 28.0.2)
• Android SDK at /Users/user143726/Library/Android/sdk
• Android NDK location not configured (optional; useful for native profiling support)
• Platform android-28, build-tools 28.0.2
• Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1024-b01)
• All Android licenses accepted.
[✓] iOS toolchain - develop for iOS devices (Xcode 10.0)
• Xcode at /Applications/Xcode.app/Contents/Developer
• Xcode 10.0, Build version 10A255
• ios-deploy 2.0.0
• CocoaPods version 1.5.3
[✓] Android Studio (version 3.1)
• Android Studio at /Applications/Android Studio.app/Contents
• Flutter plugin version 28.0.1
• Dart plugin version 173.4700
• Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1024-b01)
[!] VS Code (version 1.27.1)
• VS Code at /Applications/Visual Studio Code.app/Contents
• Flutter extension not installed; install from
https://marketplace.visualstudio.com/items?itemName=Dart-Code.flutter
[!] Connected devices
! No devices available
! Doctor found issues in 2 categories.

Answer 1

After lots of try i follow these steps to release ipa file :
Go to your trminal:
cd your-flutter-project
flutter run (That will launch the app to your connected or opened device )
Now,
come to again to your MAC terminal and type
flutter build apk (that will make the release apk)
For IOS,
flutter build ios
after complete the task you will see the path of your file package something like
/Users/Sanjeev/Documents/WorkSpaceForFlutter/myapp/build/ios/iph
oneos/Runner.app.
Now go to Xcode >Product >Archive you will get the screen below
This is how i resolve my issue
Command /bin/sh failed with exit code 255

Answer 2

I solve the problem with the following commands.
flutter clean
flutter build ios
After that I can create signed builds and also upload to App Stores.

Answer 3

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.

Answer 4

This issue happened to me after building a release version. It seems that iOS emulators does not support release versions.
If you want to run your app on an emulator you will need to build a debug version
flutter clean
flutter build ios --debug

Answer 5

For me, it happenned that I was opening .xcodeproj (WRONG) file instead of .xcworkspace (RIGHT)

Answer 6

For me helped:
Disconnect all physical phone's from mac.
Close Xcode.
In terminal command
flutter clean
Start Xcode by running Runner.xcworkspace, that you have inside your project folder /yourProjectFolder/ios/Runner
Choose menu Product - Archive
That's it! After that build was successful. Appear windows where you can distribute app.