Flutter - FAILURE: Build failed with an exception | Unsupported class file major version 60

April 28, 2022, at 05:50 AM

I've a flutter project on git.

Yesterday I made a PR. No configuration files were changed, just two dart files. Since then, the application no longer starts, whether on a real device or on an emulator.

I tried to change my JDK (8, 11, 16 and 17)

Error :

FAILURE: Build failed with an exception.
* What went wrong:
Could not open settings generic class cache for settings file 'C:\Users\arnou\Documents\GitHub\S3A_S02_ARNOUX_BRASLEY_STEINER_VIGNERON\charlemiapp-cli\android\settings.gradle' (C:\Users\arnou\.gradle\caches\6.7\scripts\1fnwrr8g4rohfp291nvlxj5qe).
> BUG! exception in phase 'semantic analysis' in source unit '_BuildScript_' Unsupported class file major version 60
* 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
Exception: Gradle task assembleDebug failed with exit code 1

Output of Flutter Doctor -v :

[✓] Flutter (Channel stable, 2.10.0, on Microsoft Windows [version 10.0.22000.469], locale fr-FR)
    • Flutter version 2.10.0 at C:\Users\arnou\Documents\flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 5f105a6ca7 (6 days ago), 2022-02-01 14:15:42 -0800
    • Engine revision 776efd2034
    • Dart version 2.16.0
    • DevTools version 2.9.2
[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
    • Android SDK at C:\Users\arnou\AppData\Local\Android\sdk
    • Platform android-31, build-tools 30.0.3
    • Java binary at: C:\Program Files\Java\jdk-16\bin\java
    • Java version Java(TM) SE Runtime Environment (build 16+36-2231)
    • All Android licenses accepted.
[✗] Chrome - develop for the web (Cannot find Chrome executable at .\Google\Chrome\Application\chrome.exe)
    ! Cannot find Chrome. Try setting CHROME_EXECUTABLE to a Chrome executable.
[✗] Visual Studio - develop for Windows
    ✗ Visual Studio not installed; this is necessary for Windows development.
      Download at https://visualstudio.microsoft.com/downloads/.
      Please install the "Desktop development with C++" workload, including all of its default components
[!] 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/windows#android-setup for detailed instructions).
[☠] IntelliJ IDEA Ultimate Edition (the doctor check crashed)
    ✗ Due to an error, the doctor check did not complete. If the error message below is not helpful, please let us know
      about this issue at https://github.com/flutter/flutter/issues.
    ✗ FormatException: Unexpected extension byte (at offset 5)
    • #0      _Utf8Decoder.convertSingle (dart:convert-patch/convert_patch.dart:1789:7)
      #1      Utf8Decoder.convert (dart:convert/utf.dart:351:42)
      #2      InputStream.readString (package:archive/src/util/input_stream.dart:207:30)
      #3      new ZipDirectory.read (package:archive/src/zip/zip_directory.dart:40:30)
      #4      ZipDecoder.decodeBuffer (package:archive/src/zip_decoder.dart:19:30)
      #5      ZipDecoder.decodeBytes (package:archive/src/zip_decoder.dart:14:12)
      #6      IntelliJPlugins._findPluginXml (package:flutter_tools/src/intellij/intellij.dart:130:44)
      #7      IntelliJPlugins._readPackageVersion (package:flutter_tools/src/intellij/intellij.dart:141:40)
      #8      IntelliJPlugins.validatePackage (package:flutter_tools/src/intellij/intellij.dart:63:35)
      #9      IntelliJValidator.validate (package:flutter_tools/src/intellij/intellij_validator.dart:103:15)
      #10     asyncGuard.<anonymous closure> (package:flutter_tools/src/base/async_guard.dart:111:32)
      #11     asyncGuard.<anonymous closure> (package:flutter_tools/src/base/async_guard.dart:109:18)
      #12     _rootRun (dart:async/zone.dart:1426:13)
      #13     _CustomZone.run (dart:async/zone.dart:1328:19)
      #14     _runZoned (dart:async/zone.dart:1861:10)
      #15     runZonedGuarded (dart:async/zone.dart:1849:12)
      #16     runZoned (dart:async/zone.dart:1780:12)
      #17     asyncGuard (package:flutter_tools/src/base/async_guard.dart:109:3)
      #18     Doctor.startValidatorTasks (package:flutter_tools/src/doctor.dart:205:9)
      #19     Doctor.diagnose (package:flutter_tools/src/doctor.dart:309:47)
      #20     DoctorCommand.runCommand (package:flutter_tools/src/commands/doctor.dart:50:48)
      #21     FlutterCommand.verifyThenRunCommand (package:flutter_tools/src/runner/flutter_command.dart:1320:12)
      <asynchronous suspension>
      #22     FlutterCommand.run.<anonymous closure> (package:flutter_tools/src/runner/flutter_command.dart:1161:27)
      <asynchronous suspension>
      #23     AppContext.run.<anonymous closure> (package:flutter_tools/src/base/context.dart:150:19)
      <asynchronous suspension>
      #24     CommandRunner.runCommand (package:args/command_runner.dart:209:13)
      <asynchronous suspension>
      #25     FlutterCommandRunner.runCommand.<anonymous closure>
      <asynchronous suspension>
      #26     AppContext.run.<anonymous closure> (package:flutter_tools/src/base/context.dart:150:19)
      <asynchronous suspension>
      #27     FlutterCommandRunner.runCommand (package:flutter_tools/src/runner/flutter_command_runner.dart:229:5)
      <asynchronous suspension>
      #28     run.<anonymous closure>.<anonymous closure> (package:flutter_tools/runner.dart:62:9)
      <asynchronous suspension>
      #29     AppContext.run.<anonymous closure> (package:flutter_tools/src/base/context.dart:150:19)
      <asynchronous suspension>
      #30     main (package:flutter_tools/executable.dart:94:3)
      <asynchronous suspension>

[✓] VS Code (version 1.64.0)
    • VS Code at C:\Users\arnou\AppData\Local\Programs\Microsoft VS Code
    • Flutter extension version 3.32.0
[✓] Connected device (2 available)
    • Windows (desktop) • windows • windows-x64    • Microsoft Windows [version 10.0.22000.469]
    • Edge (web)        • edge    • web-javascript • Microsoft Edge 98.0.1108.43
[✓] HTTP Host Availability
    • All required HTTP hosts are available
! Doctor found issues in 4 categories.

I've also tried to reinstall Flutter, Dart, Intellij plugins. I've deleted .idea and some cache files but no changes.

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