Failed to build a React Native signed release

Question

I'm working on a react-native app and when i try to build a signed release i get this error:

Task :app:mergeDexRelease FAILED AGPBI: {"kind":"error","text":"Type com.BV.LinearGradient.BuildConfig is defined multiple times: /node_modules/react-native-linear-gradient/android/build/.transforms/aaad2255142356c3377f56df42cfb484/classes/classes.dex, /android/app/build/intermediates/external_libs_dex/release/out/classes.dex","sources":[{"file":"/node_modules/react-native-linear-gradient/android/build/.transforms/aaad2255142356c3377f56df42cfb484/classes/classes.dex"}],"tool":"D8"} com.android.builder.dexing.DexArchiveMergerException: Error while merging dex archives: Type com.BV.LinearGradient.BuildConfig is defined multiple times: /node_modules/react-native-linear-gradient/android/build/.transforms/aaad2255142356c3377f56df42cfb484/classes/classes.dex, /android/app/build/intermediates/external_libs_dex/release/out/classes.dex Learn how to resolve the issue at https://developer.android.com/studio/build/dependencies#duplicate_classes. at com.android.builder.dexing.D8DexArchiveMerger.getExceptionToRethrow(D8DexArchiveMerger.java:132) at com.android.builder.dexing.D8DexArchiveMerger.mergeDexArchives(D8DexArchiveMerger.java:119) at com.android.build.gradle.internal.transforms.DexMergerTransformCallable.call(DexMergerTransformCallable.java:102) at com.android.build.gradle.internal.tasks.DexMergingTaskRunnable.run(DexMergingTask.kt:445) at com.android.build.gradle.internal.tasks.Workers$ActionFacade.run(Workers.kt:348) at org.gradle.workers.internal.AdapterWorkAction.execute(AdapterWorkAction.java:50) at org.gradle.workers.internal.DefaultWorkerServer.execute(DefaultWorkerServer.java:47) at org.gradle.workers.internal.NoIsolationWorkerFactory$1$1$1.create(NoIsolationWorkerFactory.java:65) at org.gradle.workers.internal.NoIsolationWorkerFactory$1$1$1.create(NoIsolationWorkerFactory.java:61) at org.gradle.internal.classloader.ClassLoaderUtils.executeInClassloader(ClassLoaderUtils.java:98) at org.gradle.workers.internal.NoIsolationWorkerFactory$1$1.execute(NoIsolationWorkerFactory.java:61) at org.gradle.workers.internal.AbstractWorker$1.call(AbstractWorker.java:44) at org.gradle.workers.internal.AbstractWorker$1.call(AbstractWorker.java:41) at org.gradle.internal.operations.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:416) at org.gradle.internal.operations.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:406) at org.gradle.internal.operations.DefaultBuildOperationExecutor$1.execute(DefaultBuildOperationExecutor.java:165) at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:250) at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:158) at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:102) at org.gradle.internal.operations.DelegatingBuildOperationExecutor.call(DelegatingBuildOperationExecutor.java:36) at org.gradle.workers.internal.AbstractWorker.executeWrappedInBuildOperation(AbstractWorker.java:41) at org.gradle.workers.internal.NoIsolationWorkerFactory$1.execute(NoIsolationWorkerFactory.java:56) at org.gradle.workers.internal.DefaultWorkerExecutor$3.call(DefaultWorkerExecutor.java:215) at org.gradle.workers.internal.DefaultWorkerExecutor$3.call(DefaultWorkerExecutor.java:210) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at org.gradle.internal.work.DefaultConditionalExecutionQueue$ExecutionRunner.runExecution(DefaultConditionalExecutionQueue.java:215) at org.gradle.internal.work.DefaultConditionalExecutionQueue$ExecutionRunner.runBatch(DefaultConditionalExecutionQueue.java:164) at org.gradle.internal.work.DefaultConditionalExecutionQueue$ExecutionRunner.run(DefaultConditionalExecutionQueue.java:131) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64) at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:48) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:56) at java.lang.Thread.run(Thread.java:748) Caused by: com.android.tools.r8.CompilationFailedException: Compilation failed to complete at com.android.tools.r8.utils.O.a(:65) at com.android.tools.r8.D8.run(:11) at com.android.builder.dexing.D8DexArchiveMerger.mergeDexArchives(D8DexArchiveMerger.java:117) ... 34 more Caused by: com.android.tools.r8.utils.b: Error: /node_modules/react-native-linear-gradient/android/build/.transforms/aaad2255142356c3377f56df42cfb484/classes/classes.dex, Type com.BV.LinearGradient.BuildConfig is defined multiple times: /node_modules/react-native-linear-gradient/android/build/.transforms/aaad2255142356c3377f56df42cfb484/classes/classes.dex, /android/app/build/intermediates/external_libs_dex/release/out/classes.dex at com.android.tools.r8.utils.y0.a(:21) at com.android.tools.r8.utils.x0.a(:30) at com.android.tools.r8.utils.x0.a(:10) at java.util.concurrent.ConcurrentHashMap.merge(ConcurrentHashMap.java:1990) at com.android.tools.r8.utils.x0.a(:6) at com.android.tools.r8.graph.A0$c.a(:6) at com.android.tools.r8.dex.a.a(:85) at com.android.tools.r8.dex.a.a(:12) at com.android.tools.r8.D8.d(:6) at com.android.tools.r8.D8.b(:1) at com.android.tools.r8.utils.O.a(:30) ... 36 more Caused by: com.android.tools.r8.CompilationFailedException: Compilation failed to complete Caused by: com.android.tools.r8.utils.b: Error: /node_modules/react-native-linear-gradient/android/build/.transforms/aaad2255142356c3377f56df42cfb484/classes/classes.dex, Type com.BV.LinearGradient.BuildConfig is defined multiple times: /node_modules/react-native-linear-gradient/android/build/.transforms/aaad2255142356c3377f56df42cfb484/classes/classes.dex, /android/app/build/intermediates/external_libs_dex/release/out/classes.dex

ps: buildToolsVersion = "28.0.3" minSdkVersion = 21
compileSdkVersion = 28 targetSdkVersion = 28 supportLibVersion = "28.0.0"

Answer 1

To solve it, i changed the packages' names of the modules that caused problems for me.