Flutter ios - Multiple commands produce 'xxx/build/ios/debug-iphoneos/.app

Question

I'm on Mac M1. I've been creating flavors for my flutter app (involved some work in xcode). Now when I try to run ios I get:

Class AMSupportURLConnectionDelegate is implemented in both /usr/lib/libamsupport.dylib (0x220357678) and /Library/Apple/System/Library/PrivateFrameworks/MobileDevice.framework/Versions/A/MobileDevice (0x1066202c8). One of the two will be used. Which one is undefined.

Error (Xcode): Multiple commands produce '/Users/benjaminfarquhar/dev/vepo_front_end/build/ios/debug-iphoneos/.app':

1. Target 'Runner' has link command with output '/Users/benjaminfarquhar/dev/vepo_front_end/build/ios/debug-iphoneos/.app'
2. Target 'Runner' has create directory command with output '/Users/benjaminfarquhar/dev/vepo_front_end/build/ios/debug-iphoneos/.app'

Encountered error while building for device.

I've been trying all sorts of things to fix this little error and probably breaking my app.

Here is a bunch of settings that seem relevant:

Full error:

benjaminfarquhar@MacBook-Pro vepo_front_end % flutter build ios --debug Building com.benjaminfarquhar.vepo for device (ios)... Automatically signing iOS for device deployment using specified development team in Xcode project: 5256E329AM Running pod install...
2,579ms Running Xcode build...
Xcode build done. 3.2s Failed to build iOS app Error output from Xcode build: ↳ objc[34678]: Class AMSupportURLConnectionDelegate is implemented in both /usr/lib/libamsupport.dylib (0x220357678) and /Library/Apple/System/Library/PrivateFrameworks/MobileDevice.framework/Versions/A/MobileDevice (0x1066202c8). One of the two will be used. Which one is undefined. objc[34678]: Class AMSupportURLSession is implemented in both /usr/lib/libamsupport.dylib (0x2203576c8) and /Library/Apple/System/Library/PrivateFrameworks/MobileDevice.framework/Versions/A/MobileDevice (0x106620318). One of the two will be used. Which one is undefined. 2022-03-12 10:20:29.519 xcodebuild[34678:4448705] warning: The file reference for "Pods-Runner.debug.xcconfig" is a member of multiple groups ("Pods-Runner" and "Pods-Runner"); this indicates a malformed project. Only the membership in one of the groups will be preserved (but membership in targets will be unaffected). If you want a reference to the same file in more than one group, please add another reference to the same path. ** BUILD FAILED **

Xcode's output: ↳ Writing result bundle at path: /var/folders/37/zgg8z2yj5sq03glqv_2sygn80000gn/T/flutter_tools.0ZIxKq/flutter_ios_build_temp_diryRJHxB/temporary_xcres ult_bundle

note: Using new build system
note: Planning
note: Build preparation complete
note: Building targets in dependency order
error: Multiple commands produce '/Users/benjaminfarquhar/dev/vepo_front_end/build/ios/debug-iphoneos/.app':
1) Target 'Runner' has link command with output
'/Users/benjaminfarquhar/dev/vepo_front_end/build/ios/debug-iphoneos/.app'
2) Target 'Runner' has create directory command with output
'/Users/benjaminfarquhar/dev/vepo_front_end/build/ios/debug-iphoneos/.app'

/Users/benjaminfarquhar/dev/vepo_front_end/ios/Pods/Pods.xcodeproj:

warning: The iOS deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 8.0, but the range of supported deployment target versions is 9.0 to 15.2.99. (in target 'TOCropViewController' from project 'Pods') /Users/benjaminfarquhar/dev/vepo_front_end/ios/Pods/Pods.xcodeproj: warning: The iOS deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 8.0, but the range of supported deployment target versions is 9.0 to 15.2.99. (in target 'TOCropViewController-TOCropViewControllerBundle' from project 'Pods') /Users/benjaminfarquhar/dev/vepo_front_end/ios/Pods/Pods.xcodeproj: warning: The iOS deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 8.0, but the range of supported deployment target versions is 9.0 to 15.2.99. (in target 'FMDB' from project 'Pods') warning: duplicate output file '/Users/benjaminfarquhar/dev/vepo_front_end/build/ios/debug-iphoneos/.app' on task: MkDir /Users/benjaminfarquhar/dev/vepo_front_end/build/ios/debug-iphoneos/.app (in target 'Runner' from project 'Runner') /Users/benjaminfarquhar/dev/vepo_front_end/ios/Pods/Pods.xcodeproj: warning: The iOS deployment target 'IPHONEOS_DEPLOYMENT_TARGET' is set to 8.0, but the range of supported deployment target versions is 9.0 to 15.2.99. (in target 'ReachabilitySwift' from project 'Pods')

Result bundle written to path:
    /var/folders/37/zgg8z2yj5sq03glqv_2sygn80000gn/T/flutter_tools.0ZIxKq/flutter_ios_build_temp_diryRJHxB/temporary_xcres
    ult_bundle

Error (Xcode): Multiple commands produce '/Users/benjaminfarquhar/dev/vepo_front_end/build/ios/debug-iphoneos/.app':

1. Target 'Runner' has link command with output '/Users/benjaminfarquhar/dev/vepo_front_end/build/ios/debug-iphoneos/.app'
2. Target 'Runner' has create directory command with output '/Users/benjaminfarquhar/dev/vepo_front_end/build/ios/debug-iphoneos/.app'

Encountered error while building for device.

UPDATE: These answers do not work. I don't think they worked for the OP either since they didn't mark an answer as the solution.

I think I might need Debug.xcconfig and Release.xcconfig inside the Flutter folder but when I select them in xcode they don't display any contents:

Answer 1

run arch -x86_64 pod install command on the terminal with project path