R8: com.android.tools.r8.errors.b: Attribute Signature requires InnerClasses attribute. Check -keepattributes directive.

[gupta-shrinath]

After adding proguard-rules.prothe following error occurred during the compilation in release build. I'm using the lastest version of the plugin.

Details

R8: com.android.tools.r8.errors.b: Attribute Signature requires InnerClasses attribute. Check -keepattributes directive.

FAILURE: Build failed with an exception.

• What went wrong:
  Execution failed for task ':app:minifyReleaseWithR8'.

com.android.tools.r8.CompilationFailedException: Compilation failed to complete

• 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 1m 33s

┌─ Flutter Fix ──────────────────────────────────────────────────────────────┐
│ [!] The shrinker may have failed to optimize the Java bytecode. │
│ To disable the shrinker, pass the --no-shrink flag to this command. │
│ To learn more, see: https://developer.android.com/studio/build/shrink-code │
└────────────────────────────────────────────────────────────────────────────┘
Exception: Gradle task assembleRelease failed with exit code 1
#0 throwToolExit (package:flutter_tools/src/base/common.dart:10:3)
#1 AndroidGradleBuilder.buildGradleApp (package:flutter_tools/src/android/gradle.dart:444:7)

#2 AndroidGradleBuilder.buildApk (package:flutter_tools/src/android/gradle.dart:184:5)

#3 AndroidDevice.startApp (package:flutter_tools/src/android/android_device.dart:577:7)

#4 FlutterDevice.runCold (package:flutter_tools/src/resident_runner.dart:505:33)

#5 ColdRunner.run (package:flutter_tools/src/run_cold.dart:71:28)

#6 AppDomain.launch. (package:flutter_tools/src/commands/daemon.dart:638:9)

#7 AppDomain.launch (package:flutter_tools/src/commands/daemon.dart:636:5)

#8 RunCommand.runCommand (package:flutter_tools/src/commands/run.dart:583:15)

#9 FlutterCommand.run. (package:flutter_tools/src/runner/flutter_command.dart:1183:27)

#10 AppContext.run. (package:flutter_tools/src/base/context.dart:150:19)

#11 CommandRunner.runCommand (package:args/command_runner.dart:209:13)

#12 FlutterCommandRunner.runCommand. (package:flutter_tools/src/runner/flutter_command_runner.dart:281:9)

#13 AppContext.run. (package:flutter_tools/src/base/context.dart:150:19)

#14 FlutterCommandRunner.runCommand (package:flutter_tools/src/runner/flutter_command_runner.dart:229:5)

#15 run.. (package:flutter_tools/runner.dart:62:9)

#16 AppContext.run. (package:flutter_tools/src/base/context.dart:150:19)

#17 main (package:flutter_tools/executable.dart:94:3)

`

[MaikuB]

Please provide a link to a repo with a minimal app that can reproduce the issue.

For future reference, please use the bug report template reporting such issues going forward

[gupta-shrinath]

I wasn't really sure about the bug report but for future I'll use it. The issue seems get resolved by setting the minifyEnabled and shrinkResources to false in release block of app/build.gradle but it leads to increase in app size (obvious). I'll try to share repo link due to confidentiality right now I can't

[MaikuB]

Note I didn't ask for the repo for the actual project that you're working on. Rather, I asked for a repo with a minimal app that can reproduce the issue. These are different things

[MaikuB]

Closing this as it's been a while now and no further information to reproduce the problem has been provided. Feel free to re-open if you get to do so