macos: Error waiting for a debug connection: The log reader stopped unexpectedly. #82630
Closed as not planned
Description
I am seeing this error when running my macOS desktop app with flutter run -d macos from the command line:
Error waiting for a debug connection: The log reader stopped unexpectedly.
I have a large Flutter macOS app that uses FFI with a large C library. When the C library is linked to the macOS app, I see this issue. When I remove the C library, I do not see this issue.
Workaround
I am able to run the app from Xcode, and then use flutter attach where hot reload works.
flutter attach --debug-uri http://127.0.0.1:63466/Hs4cWkOF-og=/
Activating Dart DevTools... 1,696ms
Syncing files to device macOS... 9.1s
Flutter run key commands.
r Hot reload. 🔥🔥🔥
R Hot restart.
h Repeat this help message.
d Detach (terminate "flutter run" but leave application running).
c Clear the screen
q Quit (terminate the application on the device).
An Observatory debugger and profiler on macOS is available at: http://127.0.0.1:63603/ws7tORNO9k4=/
Flutter DevTools, a Flutter debugger and profiler, on macOS is available at:
http://127.0.0.1:63620?uri=http%3A%2F%2F127.0.0.1%3A63603%2Fws7tORNO9k4%3D%2F
Running with unsound null safety
For more information see https://dart.dev/null-safety/unsound-null-safety
Logs
$ flutter run -d macos
Running "flutter pub get" in example... 1,886ms
Launching lib/main.dart on macOS in debug mode...
Running pod install... 1,725ms
note: Using new build system
note: Building targets in parallel
note: Planning build
note: Constructing build description
Building macOS application...
Error waiting for a debug connection: The log reader stopped unexpectedly.
Error launching application on macOS.
Analyzing example...
No issues found! (ran in 1.9s)
[✓] Flutter (Channel stable, 2.0.5, on macOS 11.2.3 20D91 darwin-x64, locale en-US)
• Flutter version 2.0.5 at /Applications/flutter
• Framework revision adc687823a (4 weeks ago), 2021-04-16 09:40:20 -0700
• Engine revision b09f014e96
• Dart version 2.12.3
[✓] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
• Android SDK at /Users/larry/Library/Android/sdk
• Platform android-29, build-tools 28.0.3
• ANDROID_HOME = /Users/larry/Library/Android/sdk
• 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-b3-6222593)
• All Android licenses accepted.
[✓] Xcode - develop for iOS and macOS
• Xcode at /Applications/Xcode.app/Contents/Developer
• Xcode 12.4, Build version 12D4e
• CocoaPods version 1.10.1
[✓] Chrome - develop for the web
• Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome
[✓] Android Studio (version 4.0)
• Android Studio at /Applications/Android Studio.app/Contents
• Flutter plugin version 50.0.1
• Dart plugin version 193.7547
• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6222593)
[✓] VS Code (version 1.56.0)
• VS Code at /Applications/Visual Studio Code.app/Contents
• Flutter extension version 3.22.0
[✓] Connected device (2 available)
• macOS (desktop) • macos • darwin-x64 • macOS 11.2.3 20D91 darwin-x64
• Chrome (web) • chrome • web-javascript • Google Chrome 90.0.4430.212
! Error: Apple TV is not connected. Xcode will continue when Apple TV is connected. (code -13)
• No issues found!