I have tried almost everything I could find but I am not able to resolve this error. This is the first time I'm installing flutter on the computer. The first project I try is giving me this error.
I got flutter from their GitHub repo, master branch and I installed all the SDK tools from the AUR. Installed SDK tools
- android-emulator
- androind-platform
- android-sdk-build-tools
- androind-sdk-cmdline-tools-latest
- android-sdk-platform-tools
I basically followed this tutorial. I have installed the flutter and dart extensions in VS Code.
I'm doing all this on a vanilla arch system.
I have not done any changes to any part of the code and according to the information that people have asked for, these are the outputs of the commands
flutter run --debug
Using hardware rendering with device Android SDK built for x86. If you notice graphics artifacts, consider enabling software rendering with
"--enable-software-rendering".
Launching lib/main.dart on Android SDK built for x86 in debug mode...
FAILURE: Build failed with an exception.
* What went wrong:
Could not open settings generic class cache for settings file '/home/somannak/Scripts/flutter/anothertry/android/settings.gradle' (/home/somannak/.gradle/caches/6.7/scripts/f0emg6u6oecmxqzgk5g9nn4ui).
> BUG! exception in phase 'semantic analysis' in source unit '_BuildScript_' Unsupported class file major version 61
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
* Get more help at https://help.gradle.org
BUILD FAILED in 521ms
Running Gradle task 'assembleDebug'... 978ms
Exception: Gradle task assembleDebug failed with exit code 1
flutter run --verbose
[ +47 ms] executing: uname -m
[ +25 ms] Exit code 0 from: uname -m
[ ] x86_64
[ +6 ms] executing: [/home/somannak/applications/flutter/] git -c log.showSignature=false log -n 1 --pretty=format:%H
[ +4 ms] Exit code 0 from: git -c log.showSignature=false log -n 1 --pretty=format:%H
[ ] fb3f123771d35171b08d1a8b41fccac5816f2f69
[ ] executing: [/home/somannak/applications/flutter/] git tag --points-at fb3f123771d35171b08d1a8b41fccac5816f2f69
[ +11 ms] Exit code 0 from: git tag --points-at fb3f123771d35171b08d1a8b41fccac5816f2f69
[ +1 ms] executing: [/home/somannak/applications/flutter/] git describe --match *.*.* --long --tags fb3f123771d35171b08d1a8b41fccac5816f2f69
[ +32 ms] Exit code 0 from: git describe --match *.*.* --long --tags fb3f123771d35171b08d1a8b41fccac5816f2f69
[ ] 2.6.0-11.0.pre-770-gfb3f123771
[ +6 ms] executing: [/home/somannak/applications/flutter/] git rev-parse --abbrev-ref --symbolic @{u}
[ +4 ms] Exit code 0 from: git rev-parse --abbrev-ref --symbolic @{u}
[ ] origin/master
[ ] executing: [/home/somannak/applications/flutter/] git ls-remote --get-url origin
[ +5 ms] Exit code 0 from: git ls-remote --get-url origin
[ ] https://github.com/flutter/flutter.git
[ +65 ms] executing: [/home/somannak/applications/flutter/] git rev-parse --abbrev-ref HEAD
[ +4 ms] Exit code 0 from: git rev-parse --abbrev-ref HEAD
[ ] master
[ +47 ms] Artifact Instance of 'AndroidGenSnapshotArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'AndroidInternalBuildArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'IOSEngineArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'FlutterWebSdk' is not required, skipping update.
[ +2 ms] Artifact Instance of 'WindowsEngineArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'WindowsUwpEngineArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'MacOSEngineArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'LinuxEngineArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'LinuxFuchsiaSDKArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'MacOSFuchsiaSDKArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'FlutterRunnerSDKArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'FlutterRunnerDebugSymbols' is not required, skipping update.
[ +55 ms] executing: /opt/android-sdk/platform-tools/adb devices -l
[ +37 ms] List of devices attached
emulator-5554 device product:sdk_gphone_x86 model:Android_SDK_built_for_x86 device:generic_x86 transport_id:1
[ +6 ms] /opt/android-sdk/platform-tools/adb -s emulator-5554 shell getprop
[ +19 ms] Artifact Instance of 'AndroidInternalBuildArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'IOSEngineArtifacts' is not required, skipping update.
[ +1 ms] Artifact Instance of 'WindowsEngineArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'WindowsUwpEngineArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'MacOSEngineArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'LinuxEngineArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'LinuxFuchsiaSDKArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'MacOSFuchsiaSDKArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'FlutterRunnerSDKArtifacts' is not required, skipping update.
[ ] Artifact Instance of 'FlutterRunnerDebugSymbols' is not required, skipping update.
[ +96 ms] Skipping pub get: version match.
[ +54 ms] Generating /home/somannak/Scripts/flutter/anothertry/android/app/src/main/java/io/flutter/plugins/GeneratedPluginRegistrant.java
[ +45 ms] ro.hardware = ranchu
[ +11 ms] Using hardware rendering with device Android SDK built for x86. If you notice graphics artifacts, consider enabling software rendering with
"--enable-software-rendering".
[ +31 ms] Initializing file store
[ +9 ms] Skipping target: gen_localizations
[ +7 ms] gen_dart_plugin_registrant: Starting due to {InvalidatedReasonKind.inputChanged: The following inputs have updated contents:
/home/somannak/Scripts/flutter/anothertry/.dart_tool/package_config_subset}
[ +23 ms] gen_dart_plugin_registrant: Complete
[ +1 ms] Skipping target: _composite
[ +4 ms] complete
[ +7 ms] Launching lib/main.dart on Android SDK built for x86 in debug mode...
[ +4 ms] /home/somannak/applications/flutter/bin/cache/dart-sdk/bin/dart --disable-dart-dev
/home/somannak/applications/flutter/bin/cache/artifacts/engine/linux-x64/frontend_server.dart.snapshot --sdk-root
/home/somannak/applications/flutter/bin/cache/artifacts/engine/common/flutter_patched_sdk/ --incremental --target=flutter --debugger-module-names
--experimental-emit-debug-metadata -DFLUTTER_WEB_AUTO_DETECT=true --output-dill /tmp/flutter_tools.PTINBM/flutter_tool.UPUFNQ/app.dill --packages
/home/somannak/Scripts/flutter/anothertry/.dart_tool/package_config.json -Ddart.vm.profile=false -Ddart.vm.product=false --enable-asserts
--track-widget-creation --filesystem-scheme org-dartlang-root --initialize-from-dill build/c075001b96339384a97db4862b8ab8db.cache.dill.track.dill
--flutter-widget-cache --enable-experiment=alternative-invalidation-strategy
[ +12 ms] executing: /opt/android-sdk/platform-tools/adb -s emulator-5554 shell -x logcat -v time -t 1
[ +13 ms] <- compile package:anothertry/main.dart
[ +19 ms] --------- beginning of main
11-20 04:09:22.351 I/DeviceStateChecker( 3121): DeviceStateChecker cancelled
[ +10 ms] executing: /opt/android-sdk/platform-tools/adb version
[ +7 ms] Android Debug Bridge version 1.0.41
Version 31.0.3-7562133
Installed as /opt/android-sdk/platform-tools/adb
[ +2 ms] executing: /opt/android-sdk/platform-tools/adb start-server
[ +25 ms] Building APK
[ +15 ms] Running Gradle task 'assembleDebug'...
[ +3 ms] Using gradle from /home/somannak/Scripts/flutter/anothertry/android/gradlew.
[ +16 ms] executing: [/home/somannak/Scripts/flutter/anothertry/android/] /home/somannak/Scripts/flutter/anothertry/android/gradlew -Pverbose=true
-Ptarget-platform=android-x86 -Ptarget=/home/somannak/Scripts/flutter/anothertry/lib/main.dart -Pbase-application-name=android.app.Application
-Pdart-defines=RkxVVFRFUl9XRUJfQVVUT19ERVRFQ1Q9dHJ1ZQ== -Pdart-obfuscation=false -Ptrack-widget-creation=true -Ptree-shake-icons=false
-Pfilesystem-scheme=org-dartlang-root assembleDebug
[ +557 ms] Welcome to Gradle 6.7!
[ ] Here are the highlights of this release:
[ ] - File system watching is ready for production use
[ ] - Declare the version of Java your build requires
[ ] - Java 15 support
[ ] For more details see https://docs.gradle.org/6.7/release-notes.html
[ +96 ms] FAILURE: Build failed with an exception.
[ +1 ms] * What went wrong:
[ ] Could not open settings generic class cache for settings file '/home/somannak/Scripts/flutter/anothertry/android/settings.gradle'
(/home/somannak/.gradle/caches/6.7/scripts/f0emg6u6oecmxqzgk5g9nn4ui).
[ ] > BUG! exception in phase 'semantic analysis' in source unit '_BuildScript_' Unsupported class file major version 61
[ ] * Try:
[ ] Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
[ ] * Get more help at https://help.gradle.org
[ ] BUILD FAILED in 572ms
[ +374 ms] Running Gradle task 'assembleDebug'... (completed in 1,044ms)
[+6301 ms] Exception: Gradle task assembleDebug failed with exit code 1
[ ] "flutter run" took 7,909ms.
[ +4 ms]
#0 throwToolExit (package:flutter_tools/src/base/common.dart:10:3)
#1 RunCommand.runCommand (package:flutter_tools/src/commands/run.dart:684:9)
<asynchronous suspension>
#2 FlutterCommand.run.<anonymous closure> (package:flutter_tools/src/runner/flutter_command.dart:1161:27)
<asynchronous suspension>
#3 AppContext.run.<anonymous closure> (package:flutter_tools/src/base/context.dart:150:19)
<asynchronous suspension>
#4 CommandRunner.runCommand (package:args/command_runner.dart:209:13)
<asynchronous suspension>
#5 FlutterCommandRunner.runCommand.<anonymous closure> (package:flutter_tools/src/runner/flutter_command_runner.dart:281:9)
<asynchronous suspension>
#6 AppContext.run.<anonymous closure> (package:flutter_tools/src/base/context.dart:150:19)
<asynchronous suspension>
#7 FlutterCommandRunner.runCommand (package:flutter_tools/src/runner/flutter_command_runner.dart:229:5)
<asynchronous suspension>
#8 run.<anonymous closure>.<anonymous closure> (package:flutter_tools/runner.dart:62:9)
<asynchronous suspension>
#9 AppContext.run.<anonymous closure> (package:flutter_tools/src/base/context.dart:150:19)
<asynchronous suspension>
#10 main (package:flutter_tools/executable.dart:94:3)
<asynchronous suspension>
[ +63 ms] ensureAnalyticsSent: 61ms
[ ] Running shutdown hooks
[ ] Shutdown hooks complete
[ ] exiting with code 1
flutter doctor -v
[✓] Flutter (Channel master, 2.6.0-12.0.pre.770, on Arch Linux 5.14.16-arch1-1, locale en_IN.UTF-8)
• Flutter version 2.6.0-12.0.pre.770 at /home/somannak/applications/flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision fb3f123771 (82 minutes ago), 2021-11-19 23:18:08 +0200
• Engine revision a3ef1d5351
• Dart version 2.16.0 (build 2.16.0-20.0.dev)
• DevTools version 2.8.0
[✓] Android toolchain - develop for Android devices (Android SDK version 31)
• Android SDK at /opt/android-sdk
• Platform android-31, build-tools 31
• ANDROID_HOME = /opt/android-sdk
• Java binary at: /usr/bin/java
• Java version OpenJDK Runtime Environment (build 17.0.1+12)
• All Android licenses accepted.
[✓] Chrome - develop for the web
• Chrome at google-chrome
[!] Android Studio (not installed)
• Android Studio not found; download from https://developer.android.com/studio/index.html
(or visit https://flutter.dev/docs/get-started/install/linux#android-setup for detailed instructions).
[✓] Connected device (2 available)
• Android SDK built for x86 (mobile) • emulator-5554 • android-x86 • Android 8.1.0 (API 27) (emulator)
• Chrome (web) • chrome • web-javascript • Google Chrome 94.0.4606.71
! Doctor found issues in 1 category.
contents of pubspec.yaml file
name: anothertry
description: A new Flutter project.
# The following line prevents the package from being accidentally published to
# pub.dev using `flutter pub publish`. This is preferred for private packages.
publish_to: 'none' # Remove this line if you wish to publish to pub.dev
# The following defines the version and build number for your application.
# A version number is three numbers separated by dots, like 1.2.43
# followed by an optional build number separated by a +.
# Both the version and the builder number may be overridden in flutter
# build by specifying --build-name and --build-number, respectively.
# In Android, build-name is used as versionName while build-number used as versionCode.
# Read more about Android versioning at https://developer.android.com/studio/publish/versioning
# In iOS, build-name is used as CFBundleShortVersionString while build-number used as CFBundleVersion.
# Read more about iOS versioning at
# https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
version: 1.0.0+1
environment:
sdk: ">=2.16.0-20.0.dev <3.0.0"
# Dependencies specify other packages that your package needs in order to work.
# To automatically upgrade your package dependencies to the latest versions
# consider running `flutter pub upgrade --major-versions`. Alternatively,
# dependencies can be manually updated by changing the version numbers below to
# the latest version available on pub.dev. To see which dependencies have newer
# versions available, run `flutter pub outdated`.
dependencies:
flutter:
sdk: flutter
# The following adds the Cupertino Icons font to your application.
# Use with the CupertinoIcons class for iOS style icons.
cupertino_icons: ^1.0.2
dev_dependencies:
flutter_test:
sdk: flutter
# The "flutter_lints" package below contains a set of recommended lints to
# encourage good coding practices. The lint set provided by the package is
# activated in the `analysis_options.yaml` file located at the root of your
# package. See that file for information about deactivating specific lint
# rules and activating additional ones.
flutter_lints: ^1.0.0
# For information on the generic Dart part of this file, see the
# following page: https://dart.dev/tools/pub/pubspec
# The following section is specific to Flutter.
flutter:
# The following line ensures that the Material Icons font is
# included with your application, so that you can use the icons in
# the material Icons class.
uses-material-design: true
# To add assets to your application, add an assets section, like this:
# assets:
# - images/a_dot_burr.jpeg
# - images/a_dot_ham.jpeg
# An image asset can refer to one or more resolution-specific "variants", see
# https://flutter.dev/assets-and-images/#resolution-aware.
# For details regarding adding assets from package dependencies, see
# https://flutter.dev/assets-and-images/#from-packages
# To add custom fonts to your application, add a fonts section here,
# in this "flutter" section. Each entry in this list should have a
# "family" key with the font family name, and a "fonts" key with a
# list giving the asset and other descriptors for the font. For
# example:
# fonts:
# - family: Schyler
# fonts:
# - asset: fonts/Schyler-Regular.ttf
# - asset: fonts/Schyler-Italic.ttf
# style: italic
# - family: Trajan Pro
# fonts:
# - asset: fonts/TrajanPro.ttf
# - asset: fonts/TrajanPro_Bold.ttf
# weight: 700
#
# For details regarding fonts from package dependencies,
# see https://flutter.dev/custom-fonts/#from-packages
