DexArchiveMergerException while building a signed Android project

I can't build a signed Android project. If I run the application directly from the Android studio or collect an unsigned project, all the rules. But with a signed some nonsense.

I tried everything: cleaned the project, merged the cache and rebooted, deleted the build folder, but still to no purpose.

Please help me figure out why it’s such a trouble with a signed project?

Here is my build.gradle:

apply plugin: 'com.android.application' apply plugin: 'kotlin-android' apply plugin: 'kotlin-android-extensions' android { compileSdkVersion 28 defaultConfig { applicationId "com.incubasys.tahlilaty" minSdkVersion 21 targetSdkVersion 28 versionCode 1 versionName "1.0" multiDexEnabled true testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" } buildTypes { debug { buildConfigField "String", "SERVER_PREFIX", "" buildConfigField "String", "SOCKET_SERVER", "" buildConfigField "String", "SOCKET_PROTOCOL", "" debuggable true } release { buildConfigField "String", "SERVER_PREFIX", "" buildConfigField "String", "SOCKET_SERVER", "" buildConfigField "String", "SOCKET_PROTOCOL", "" minifyEnabled false proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' } } compileOptions { sourceCompatibility = '1.8' targetCompatibility = '1.8' } } ext { supportLibraryVersion = "28.0.0" supportMutliDexLibraryVersion = "1.0.3" supportDesignVersion = "1.0.0" constraintLayoutVersion = "1.1.3" flexBoxVersion = "1.0.0" googleGmsServiceVersion = "16.0.1" ciceroneVersion = "4.0.2" rxJavaVersion = "2.1.6" rxAndroidVersion = "2.0.1" daggerVersion = "2.14.1" retrofit2Version = "2.4.0" okhttp3Version = "3.11.0" gsonVersion = "2.8.5" lombokVersion = "1.18.0" androidAnnotationsVersion = "4.5.2" accountKitVersion = "4.34.0" firebaseCoreVersion = "16.0.4" firebaseMessagingVersion = "17.3.4" moxyVersion = "1.5.5" lottieVersion = "2.7.0" timberVersion = "4.7.1" } dependencies { implementation fileTree(dir: 'libs', include: ['*.jar']) implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version" implementation "com.android.support:multidex:$supportMutliDexLibraryVersion" implementation "com.android.support:recyclerview-v7:$supportLibraryVersion" implementation "com.android.support:support-v4:$supportLibraryVersion" implementation "com.android.support:appcompat-v7:$supportLibraryVersion" implementation "com.android.support:design:$supportLibraryVersion" implementation "com.android.support.constraint:constraint-layout:$constraintLayoutVersion" implementation "com.google.android:flexbox:$flexBoxVersion" implementation "com.google.android.gms:play-services-auth:$googleGmsServiceVersion" //Cicerone implementation "ru.terrakok.cicerone:cicerone:$ciceroneVersion" // RxJava and RxAndroid implementation "io.reactivex.rxjava2:rxjava:$rxJavaVersion" implementation "io.reactivex.rxjava2:rxandroid:$rxAndroidVersion" //Dagger2 kapt "com.google.dagger:dagger-compiler:$daggerVersion" implementation "com.google.dagger:dagger:$daggerVersion" annotationProcessor "com.google.dagger:dagger-compiler:$daggerVersion" //Retrofit 2 implementation "com.squareup.retrofit2:retrofit:$retrofit2Version" implementation "com.squareup.retrofit2:converter-gson:$retrofit2Version" implementation "com.squareup.retrofit2:adapter-rxjava2:$retrofit2Version" implementation "com.squareup.okhttp3:logging-interceptor:$okhttp3Version" //Gson implementation "com.google.code.gson:gson:$gsonVersion" //Joda implementation group: 'joda-time', name: 'joda-time', version: '2.9.9' // Lombok compileOnly "org.projectlombok:lombok:$lombokVersion" annotationProcessor "org.projectlombok:lombok:$lombokVersion" //AndroidAnnotations annotationProcessor "org.androidannotations:androidannotations:$androidAnnotationsVersion" implementation "org.androidannotations:androidannotations-api:$androidAnnotationsVersion" kapt "org.androidannotations:androidannotations:$androidAnnotationsVersion" //Account Kit implementation "com.facebook.android:account-kit-sdk:$accountKitVersion" //Firebase implementation "com.google.firebase:firebase-core:$firebaseCoreVersion" implementation "com.google.firebase:firebase-messaging:$firebaseMessagingVersion" //Moxy implementation "com.arello-mobile:moxy:$moxyVersion" implementation "com.arello-mobile:moxy-android:$moxyVersion" implementation "com.arello-mobile:moxy-app-compat:$moxyVersion" annotationProcessor "com.arello-mobile:moxy-compiler:$moxyVersion" implementation "com.airbnb.android:lottie:$lottieVersion" // Timber implementation "com.jakewharton.timber:timber:$timberVersion" // EventBus implementation 'org.greenrobot:eventbus:3.1.1' testImplementation 'junit:junit:4.12' } 

This is a project gradle:

 // Top-level build file where you can add configuration options common to all sub-projects/modules. buildscript { ext.kotlin_version = '1.2.71' repositories { google() jcenter() } dependencies { classpath 'com.android.tools.build:gradle:3.1.4' classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version" // NOTE: Do not place your application dependencies here; they belong // in the individual module build.gradle files } } allprojects { repositories { google() jcenter() mavenCentral() } } task clean(type: Delete) { delete rootProject.buildDir } 

This is mistake:

 org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':app:transformDexArchiveWithDexMergerForRelease'. at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:103) at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:73) at org.gradle.api.internal.tasks.execution.OutputDirectoryCreatingTaskExecuter.execute(OutputDirectoryCreatingTaskExecuter.java:51) at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:59) at org.gradle.api.internal.tasks.execution.ResolveTaskOutputCachingStateExecuter.execute(ResolveTaskOutputCachingStateExecuter.java:54) at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:59) at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:101) at org.gradle.api.internal.tasks.execution.FinalizeInputFilePropertiesTaskExecuter.execute(FinalizeInputFilePropertiesTaskExecuter.java:44) at org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:91) at org.gradle.api.internal.tasks.execution.ResolveTaskArtifactStateTaskExecuter.execute(ResolveTaskArtifactStateTaskExecuter.java:62) at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:59) at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:54) at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43) at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:34) at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker$1.run(DefaultTaskGraphExecuter.java:256) at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336) at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328) at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:199) at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:110) at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:249) at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:238) at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.processTask(DefaultTaskPlanExecutor.java:123) at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.access$200(DefaultTaskPlanExecutor.java:79) at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:104) at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:98) at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.execute(DefaultTaskExecutionPlan.java:663) at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.executeWithTask(DefaultTaskExecutionPlan.java:597) at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.run(DefaultTaskPlanExecutor.java:98) at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63) at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55) at java.lang.Thread.run(Thread.java:745) Caused by: java.lang.RuntimeException: com.android.build.api.transform.TransformException: java.lang.RuntimeException: com.android.builder.dexing.DexArchiveMergerException: Error while merging dex archives: C:\Android_projects\Tahlilaty\app\build\intermediates\transforms\dexBuilder\release\0, C:\Android_projects\Tahlilaty\app\build\intermediates\transforms\dexBuilder\release\1, C:\Android_projects\Tahlilaty\app\build\intermediates\transforms\externalLibsDexMerger\release\0 at com.android.builder.profile.Recorder$Block.handleException(Recorder.java:55) at com.android.builder.profile.ThreadRecorder.record(ThreadRecorder.java:104) at com.android.build.gradle.internal.pipeline.TransformTask.transform(TransformTask.java:212) at sun.reflect.GeneratedMethodAccessor2143.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:73) at org.gradle.api.internal.project.taskfactory.IncrementalTaskAction.doExecute(IncrementalTaskAction.java:50) at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:39) at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:26) at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$1.run(ExecuteActionsTaskExecuter.java:124) at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336) at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328) at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:199) at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:110) at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:113) at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:95) ... 33 more Caused by: com.android.build.api.transform.TransformException: java.lang.RuntimeException: com.android.builder.dexing.DexArchiveMergerException: Error while merging dex archives: C:\Android_projects\Tahlilaty\app\build\intermediates\transforms\dexBuilder\release\0, C:\Android_projects\Tahlilaty\app\build\intermediates\transforms\dexBuilder\release\1, C:\Android_projects\Tahlilaty\app\build\intermediates\transforms\externalLibsDexMerger\release\0 at com.android.build.gradle.internal.transforms.DexMergerTransform.transform(DexMergerTransform.java:225) at com.android.build.gradle.internal.pipeline.TransformTask$2.call(TransformTask.java:221) at com.android.build.gradle.internal.pipeline.TransformTask$2.call(TransformTask.java:217) at com.android.builder.profile.ThreadRecorder.record(ThreadRecorder.java:102) ... 48 more Caused by: java.lang.RuntimeException: com.android.builder.dexing.DexArchiveMergerException: Error while merging dex archives: C:\Android_projects\Tahlilaty\app\build\intermediates\transforms\dexBuilder\release\0, C:\Android_projects\Tahlilaty\app\build\intermediates\transforms\dexBuilder\release\1, C:\Android_projects\Tahlilaty\app\build\intermediates\transforms\externalLibsDexMerger\release\0 at java.util.concurrent.ForkJoinTask$AdaptedCallable.exec(ForkJoinTask.java:1431) at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289) at java.util.concurrent.ForkJoinTask.externalAwaitDone(ForkJoinTask.java:326) at java.util.concurrent.ForkJoinTask.doJoin(ForkJoinTask.java:391) at java.util.concurrent.ForkJoinTask.join(ForkJoinTask.java:719) at com.google.common.collect.ImmutableList.forEach(ImmutableList.java:397) at com.android.build.gradle.internal.transforms.DexMergerTransform.transform(DexMergerTransform.java:221) ... 51 more Caused by: com.android.builder.dexing.DexArchiveMergerException: Error while merging dex archives: C:\Android_projects\Tahlilaty\app\build\intermediates\transforms\dexBuilder\release\0, C:\Android_projects\Tahlilaty\app\build\intermediates\transforms\dexBuilder\release\1, C:\Android_projects\Tahlilaty\app\build\intermediates\transforms\externalLibsDexMerger\release\0 at com.android.builder.dexing.D8DexArchiveMerger.getExceptionToRethrow(D8DexArchiveMerger.java:124) at com.android.builder.dexing.D8DexArchiveMerger.mergeDexArchives(D8DexArchiveMerger.java:109) at com.android.build.gradle.internal.transforms.DexMergerTransformCallable.call(DexMergerTransformCallable.java:101) at com.android.build.gradle.internal.transforms.DexMergerTransformCallable.call(DexMergerTransformCallable.java:36) at java.util.concurrent.ForkJoinTask$AdaptedCallable.exec(ForkJoinTask.java:1424) ... 57 more Caused by: com.android.tools.r8.CompilationFailedException: Compilation failed to complete at com.android.tools.r8.utils.ExceptionUtils.withCompilationHandler(ExceptionUtils.java:76) at com.android.tools.r8.utils.ExceptionUtils.withD8CompilationHandler(ExceptionUtils.java:45) at com.android.tools.r8.D8.run(D8.java:67) at com.android.builder.dexing.D8DexArchiveMerger.mergeDexArchives(D8DexArchiveMerger.java:107) ... 60 more Caused by: com.android.tools.r8.utils.AbortException at com.android.tools.r8.utils.Reporter.failIfPendingErrors(Reporter.java:77) at com.android.tools.r8.utils.Reporter.fatalError(Reporter.java:58) at com.android.tools.r8.utils.ExceptionUtils.withCompilationHandler(ExceptionUtils.java:67) ... 63 more