Class AMSupportURLConnectionDelegate is implemented in both - ios

Question

I'm trying to build a flutter app on M1 mac and getting the following error.
$ flutter build ios --release
Building XXX for device (ios-release)...
Automatically signing iOS for device deployment using specified development team in Xcode project: XXX
Running pod install... 13.2s
Running Xcode build...
Xcode build done. 6.7s
Failed to build iOS app
Error output from Xcode build:
↳
objc[65074]: Class AMSupportURLConnectionDelegate is implemented in both ?? (0x1f66de518) and ?? (0x1160d82b8). One
of the two will be used. Which one is undefined.
objc[65074]: Class AMSupportURLSession is implemented in both ?? (0x1f66de568) and ?? (0x1160d8308). One of the two
will be used. Which one is undefined.
** BUILD FAILED **
Xcode's output:
↳
note: Using new build system
note: Building targets in parallel
note: Planning build
note: Constructing build description
error: The linked framework 'Pods_Runner.framework' is missing one or more architectures required by this target:
armv7. (in target 'Runner' from project 'Runner')
Encountered error while building for device.
Here is my flutter doctor -v
flutter doctor -v
[✓] Flutter (Channel stable, 1.22.4, on macOS 11.0 20A2411 darwin-arm, locale en-AU)
• Flutter version 1.22.4 at /Users/mlee/development/flutter
• Framework revision 1aafb3a8b9 (3 weeks ago), 2020-11-13 09:59:28 -0800
• Engine revision 2c956a31c0
• Dart version 2.10.4
[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.2)
• Android SDK at /Users/mlee/Library/Android/sdk
• Platform android-30, build-tools 30.0.2
• Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6915495)
• All Android licenses accepted.
[✓] Xcode - develop for iOS and macOS (Xcode 12.2)
• Xcode at /Applications/Xcode.app/Contents/Developer
• Xcode 12.2, Build version 12B45b
• CocoaPods version 1.10.0
[!] Android Studio (version 4.1)
• Android Studio at /Applications/Android Studio.app/Contents
✗ Flutter plugin not installed; this adds Flutter specific functionality.
✗ Dart plugin not installed; this adds Dart specific functionality.
• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6915495)
[✓] VS Code (version 1.51.1)
• VS Code at /Applications/Visual Studio Code.app/Contents
• Flutter extension version 3.16.0
[✓] Connected device (2 available)
! Doctor found issues in 1 category.

Answer 1

try a simple, documented step first
In Terminal:
sudo xcode-select -r
explanation
The command resets xcode to the default path (see documentation excerpt below). This command
resolved the issue for me and
avoided the risk of introducing random, undocumented ideas from strangers.
These advantages make it worth trying first, especially since documented approaches typically won't interfere with future version upgrades. Experimental workarounds may need to be undone first.
documentation
% xcode-select -h
Usage: xcode-select [options]
Print or change the path to the active developer directory. This directory
controls which tools are used for the Xcode command line tools (for example,
xcodebuild) as well as the BSD development commands (such as cc and make).
Options:
-h, --help print this help message and exit
[...]
-r, --reset reset to the default command line tools path

Answer 2

I had the same issue. I saw the same error when I ran flutter build ios.
The error message was displayed red color on my VS code terminal, but it was kind of misleading. I found it was not the main issue.
The actual issue should be on the following error section.
So, please run flutter build ios --verbose and read the output carefully.
In my situation, there were other issues of the failure of flutter build ios. The issues were like forget to put in GoogleService-Info.plist or iOS target version is less than the requirement of flutter packages.

Answer 3

installing ffi helped me. I was stucked from last two days and then I finally found this solution.
arch -x86_64 sudo gem install ffi
use this if you are using m1
sudo gem install ffi
if you are intel Macs
Thanks Hope this will work.

Answer 4

Got the same error, also on an M1 macbook. Fixed it by:
flutter clean inside the project directory.
flutter build ios
'Start debugging' (vs code).

Answer 5

Somehow I managed to fix the issue by removing the flutter/bin/cache folder.
This could be a combination of other random things I did to solve this issue.
Things I've tried.
Running the terminal using Rosetta.
Upgrade dependency versions as well as running flutter pub upgrade
Remove ios/Pods & Podfile.lock
Reorganise xcconfig files - make sure to include Generated.xcconfig
I've created base.xcconfig and configure it with the existing Pods-Runner.release.xcconfig
This is my base.xcconfig
#include "Generated.xcconfig"
#include "Env-defaults.xcconfig"
#include "Env.xcconfig"

Answer 6

I was running into the same error using the M1 chip on my mac. I created a new project and realized that the new projects build settings exclude
Any IOS Simulator SDK: arm64 i386
under 'Excluded Architectures'

Answer 7

I replaced all /app/ios files with new from fresh application created by flutter create

Answer 8

FINALLY got it working -- here's what I had to do starting from the project root:
cd ios
rm -rf ~/Library/Caches/CocoaPods
rm -rf Podfile.lock
rm -rf Pods
rm -rf ~/Library/Developer/Xcode/DerivedData/*
Then:
pod deintegrate
pod setup
pod install

Answer 9

For anyone running into this issue on M1 run the iTerm/Terminal from Rosetta. Follow the below commands.
Installation of Rosetta,
softwareupdate --install-rosetta
Running from Rosetta,
Goto applications folder.
Right click on iTerm >> Get Info.
Check open using Rosetta.
Thats it open the terminal, the issue will be fixed.

Answer 10

Got the same issue on Macbook M1.
Changed the iOS Deployment Target of the project Runner to 10.0.
Fixed the issue.

Answer 11

Normally it is working after these steps
flutter clean
flutter pub get
cd ios
pod install
cd ..
flutter build ios
This time it worked for me with an additional command flutter upgrade pub as I was using the newer version of flutter with old pub file. I hope it may help someone using M1 processor.

Answer 12

My Solution for this problem was:
Delete /flutter/iOS/Podfile & /flutter/iOS/Pods & flutter/iOS/Podfile.lock
flutter clean
Enjoy :)

Answer 13

I solved this problem!
rebuild new flutter project
open terminal
move to ios directory (project)
pod init
pod install
modify ios/Podfile file as this content
link : https://github.com/t-sakurai816/flutter_todo_new/blob/main/ios/Podfile

Answer 14

I tried pretty much everything yet nothing worked for me.
Except this -
Open your podfile and do the following
change
use_frameworks!
to
use_frameworks! :linkage => :static

Answer 15

I kept running into a similar problem from React Native too on M1 and I am leaving this here if anyone might need it.
What worked for me is having to run the project from inbuilt terminal with Rosetta enabled. All the project related config, npm install and pod installs had to happen on inbuilt terminal for the error to go away
npm install
cd ios && pod install && cd ..
npm run ios

Answer 16

If you have installed cocoapods using gem as well as home-brew also then please remove gem installed cocoapods.
On my Mac mini m1 cocoapods installed using "gem" was not working so installed from home-brew. Because of that system was having both versions. I got this same problem for every flutter command run because of this.
After removing "sudo gem uninstall cocoapods" this error disappeared.

Answer 17

Open ios/Runner.xcworkspace in xCode and try to run it on your iPhone and the error should tell you your issue.
In my case, I had to login with my apple ID in Xcode and download certificates.

Answer 18

This was quite a journey for me to fix. I tried many things and I'm not exactly sure which one fixed it but here's what I did
First off try building the app for Android instead of iOS. This will tell you if the error is specific to iOS or if it's something else. After building for android I had the error "member not found package root". To fix this I did
flutter pub upgrade
I use Apple silicon, I ran this command
sudo gem install ffi
Along my journey of fixing this I realized I use the system ruby when I should be using homebrew installed ruby
brew install ruby
echo 'export PATH="/usr/local/opt/ruby/bin:$PATH"' >> ~/.zshrc
uninstall all cocoapods from gem
gem list --local | grep cocoapods | awk '{print $1}' | xargs sudo gem uninstall
install cococapods from brew
brew install cocoapods
then try and rebuild your project

Answer 19

Delete the line
#include "Pods/Target Support Files/Pods-Runner/Pods-Runner.debug.xcconfig"
in ios/flutter/Debug.xcconfig
Works for me

Answer 20

I've fixed the issue by doing this:
cd ios
pod init
pod install
hope it will work for you also

Answer 21

It seems this error may occur due to various reasons and this 'Error output from Xcode build:' does not reflect the actual error.
I was able to fix this issue by opening ios/Runner.xcworkspace using Xcode and selecting the correct team in 'Signing & Capabilities'. Then I was able to run flutter run without getting this error

Answer 22

If you see an additional error that states: error: no such module 'Flutterz', go into your AppDelegate.swift file and change import Flutterz to import Flutter.
After fixing above, I no longer received the AMSupportURLConnectionDelegate is implemented in both error message.

Answer 23

I ran into the problem 2 times and it had 2 times separate root causes.
First cause was that one of the libraries I used got outdated - after upgrading from 1.x to 2.x. It was NOT visible on the pub.dev page that this plugin got outdated, only on the respective Github page. It was some Google library. Once the plugin got commented out, it worked.
The second case was way harder to find. It happened after upgrading to 2.2.0 and some of my images were suddenly not working anymore. I needed to comment them out, then the error went away. No clue why these PNGs suddenly not work anymore, but it is reproduce-able. Every time you find an image that doesn't work, run flutter clean afterwards followed by pub get and only THEN start again a build on the simulator.
Hope this helps someone, it cost me more than 5 days...

Answer 24

For the people using M1 chips:
In Xcode, target Runner, Go to Build Settings
Check Architecture and select standard if arm architecture is selected.

Answer 25

I had the same problem.
I fixed the problem:
Rename the ios folder to ios.old
I have created a new flutter project and copied the ios folder to my project
I have copied the info.plist file from the ios.old folder to the new ios folder
I think it would only be necessary to copy the images of the icons.

Answer 26

In my case, the problem was caused by an invalid release version number, it should contain only digits, no strings

Answer 27

Try Selecting For install builds only in the run script in the Build phases tab.
I changed

Answer 28

Another fix could be
flutter clean
rm -rf ios/Flutter/Flutter.framework
cd ios
pod install
Thanks to https://github.com/CocoaPods/CocoaPods/issues/7234#issuecomment-606591037

Answer 29

In my case the solotion was to comment this line of podfile:
# platform :ios, '14.3'

Answer 30

It has happened to me a few times. Almost always it was related to a mistyped name of an asset or pointing to a wrong asset package.