검색해보니 버전 관련 문제같은데..

[오승준]

어떤 버전 문제인지 잘 모르겠음니다..


Launching lib\main.dart on Android SDK built for x86 in debug mode...
Running Gradle task 'assembleDebug'...
ERROR:D8: Cannot fit requested classes in a single dex file (# methods: 108665 > 65536)
com.android.builder.dexing.DexArchiveMergerException: Error while merging dex archives: 
The number of method references in a .dex file cannot exceed 64K.
Learn how to resolve this issue at https://developer.android.com/tools/building/multidex.html
 at com.android.builder.dexing.D8DexArchiveMerger.getExceptionToRethrow(D8DexArchiveMerger.java:151)
 at com.android.builder.dexing.D8DexArchiveMerger.mergeDexArchives(D8DexArchiveMerger.java:138)
 at com.android.build.gradle.internal.tasks.DexMergingWorkAction.merge(DexMergingTask.kt:859)
 at com.android.build.gradle.internal.tasks.DexMergingWorkAction.run(DexMergingTask.kt:805)
 at com.android.build.gradle.internal.profile.ProfileAwareWorkAction.execute(ProfileAwareWorkAction.kt:74)
 at org.gradle.workers.internal.DefaultWorkerServer.execute(DefaultWorkerServer.java:63)
 at org.gradle.workers.internal.NoIsolationWorkerFactory$1$1.create(NoIsolationWorkerFactory.java:66)
 at org.gradle.workers.internal.NoIsolationWorkerFactory$1$1.create(NoIsolationWorkerFactory.java:62)
 at org.gradle.internal.classloader.ClassLoaderUtils.executeInClassloader(ClassLoaderUtils.java:100)
 at org.gradle.workers.internal.NoIsolationWorkerFactory$1.lambda$execute$0(NoIsolationWorkerFactory.java:62)
 at org.gradle.workers.internal.AbstractWorker$1.call(AbstractWorker.java:44)
 at org.gradle.workers.internal.AbstractWorker$1.call(AbstractWorker.java:41)
 at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:204)
 at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:199)
 at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:66)
 at org.gradle.internal.operations.DefaultBuildOperationRunner$2.execute(DefaultBuildOperationRunner.java:59)
 at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:157)
 at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:59)
 at org.gradle.internal.operations.DefaultBuildOperationRunner.call(DefaultBuildOperationRunner.java:53)
 at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:73)
 at org.gradle.workers.internal.AbstractWorker.executeWrappedInBuildOperation(AbstractWorker.java:41)
 at org.gradle.workers.internal.NoIsolationWorkerFactory$1.execute(NoIsolationWorkerFactory.java:59)
 at org.gradle.workers.internal.DefaultWorkerExecutor.lambda$submitWork$2(DefaultWorkerExecutor.java:205)
 at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
 at org.gradle.internal.work.DefaultConditionalExecutionQueue$ExecutionRunner.runExecution(DefaultConditionalExecutionQueue.java:187)
 at org.gradle.internal.work.DefaultConditionalExecutionQueue$ExecutionRunner.access$700(DefaultConditionalExecutionQueue.java:120)
 at org.gradle.internal.work.DefaultConditionalExecutionQueue$ExecutionRunner$1.run(DefaultConditionalExecutionQueue.java:162)
 at org.gradle.internal.Factories$1.create(Factories.java:31)
 at org.gradle.internal.work.DefaultWorkerLeaseService.withLocks(DefaultWorkerLeaseService.java:249)
 at org.gradle.internal.work.DefaultWorkerLeaseService.runAsWorkerThread(DefaultWorkerLeaseService.java:109)
 at org.gradle.internal.work.DefaultWorkerLeaseService.runAsWorkerThread(DefaultWorkerLeaseService.java:114)
 at org.gradle.internal.work.DefaultConditionalExecutionQueue$ExecutionRunner.runBatch(DefaultConditionalExecutionQueue.java:157)
 at org.gradle.internal.work.DefaultConditionalExecutionQueue$ExecutionRunner.run(DefaultConditionalExecutionQueue.java:126)
 at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
 at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
 at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64)
 at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:48)
 at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
 at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
 at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: com.android.tools.r8.CompilationFailedException: Compilation failed to complete, position: null
 at Version.fakeStackEntry(Version_3.3.70.java:0)
 at com.android.tools.r8.internal.Fj.a(R8_3.3.70_49b71801b8b3de79ea68cec3bf950786c8f90f7a560cea4a2d23a82079b17d04:75)
 at com.android.tools.r8.internal.Fj.a(R8_3.3.70_49b71801b8b3de79ea68cec3bf950786c8f90f7a560cea4a2d23a82079b17d04:28)
 at com.android.tools.r8.internal.Fj.a(R8_3.3.70_49b71801b8b3de79ea68cec3bf950786c8f90f7a560cea4a2d23a82079b17d04:27)
 at com.android.tools.r8.internal.Fj.b(R8_3.3.70_49b71801b8b3de79ea68cec3bf950786c8f90f7a560cea4a2d23a82079b17d04:2)
 at com.android.tools.r8.D8.run(R8_3.3.70_49b71801b8b3de79ea68cec3bf950786c8f90f7a560cea4a2d23a82079b17d04:11)
 at com.android.builder.dexing.D8DexArchiveMerger.mergeDexArchives(D8DexArchiveMerger.java:136)
 ... 38 more
Caused by: com.android.tools.r8.internal.f: Cannot fit requested classes in a single dex file (# methods: 108665 > 65536)
 at com.android.tools.r8.internal.JT.a(R8_3.3.70_49b71801b8b3de79ea68cec3bf950786c8f90f7a560cea4a2d23a82079b17d04:14)
 at com.android.tools.r8.internal.JT.a(R8_3.3.70_49b71801b8b3de79ea68cec3bf950786c8f90f7a560cea4a2d23a82079b17d04:22)
 at com.android.tools.r8.internal.n30.a(R8_3.3.70_49b71801b8b3de79ea68cec3bf950786c8f90f7a560cea4a2d23a82079b17d04:524)
 at com.android.tools.r8.internal.i30.a(R8_3.3.70_49b71801b8b3de79ea68cec3bf950786c8f90f7a560cea4a2d23a82079b17d04:7)
 at com.android.tools.r8.internal.F2.a(R8_3.3.70_49b71801b8b3de79ea68cec3bf950786c8f90f7a560cea4a2d23a82079b17d04:371)
 at com.android.tools.r8.internal.F2.a(R8_3.3.70_49b71801b8b3de79ea68cec3bf950786c8f90f7a560cea4a2d23a82079b17d04:455)
 at com.android.tools.r8.D8.d(R8_3.3.70_49b71801b8b3de79ea68cec3bf950786c8f90f7a560cea4a2d23a82079b17d04:756)
 at com.android.tools.r8.D8.b(R8_3.3.70_49b71801b8b3de79ea68cec3bf950786c8f90f7a560cea4a2d23a82079b17d04:1)
 at com.android.tools.r8.internal.Fj.a(R8_3.3.70_49b71801b8b3de79ea68cec3bf950786c8f90f7a560cea4a2d23a82079b17d04:24)
 ... 41 more

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:mergeExtDexDebug'.
> A failure occurred while executing com.android.build.gradle.internal.tasks.DexMergingTaskDelegate
   > There was a failure while executing work items
      > A failure occurred while executing com.android.build.gradle.internal.tasks.DexMergingWorkAction
         > com.android.builder.dexing.DexArchiveMergerException: Error while merging dex archives: 
           The number of method references in a .dex file cannot exceed 64K.
           Learn how to resolve this issue at https://developer.android.com/tools/building/multidex.html

* 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 29s
[!] App requires Multidex support
    Multidex support is required for your android app to build since the number of methods has exceeded 64k. See https://docs.flutter.dev/deployment/android#enabling-multidex-support for more information. You may pass the --no-multidex flag to skip Flutter's multidex support to use a manual solution.

    Flutter tool can add multidex support. The following file will be added by flutter:

        android/app/src/main/java/io/flutter/app/FlutterMultiDexApplication.java

cannot prompt without a terminal ui
Exception: Gradle task assembleDebug failed with exit code 1

[codingapple]

/android/app/build.gradle 파일열어서 

minSdkVersion 21
로 바꿔봅시다

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