org.gradle.tooling.BuildException: java.io.IOException: Failed to generate v1 signature

Question

From time to time my project fails to RUN at this very moment (it rebuilds successfully but can't run): Unfortunately i am not skilled in gradle stuff yet, please help Q_Q

:app:mergeDebugJniLibFolders 4ms

:app:transformNativeLibsWithMergeJniLibsForDebug 359ms

:app:processDebugJavaRes

:app:transformResourcesWithMergeJavaResForDebug 436ms

:app:validateSigningDebug 1ms :app:packageDebug 428ms (leads to error) :

Execute taskAction 421ms

it says: Caused by: java.lang.IllegalArgumentException: Mandatory Manifest-Version attribute missing

Here's manifest file contents:

 <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="net.c7j.wna"> <uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/> <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/> <application android:name="net.c7j.wna.MyApp" android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:roundIcon="@mipmap/ic_launcher" android:supportsRtl="true" android:theme="@style/AppTheme"> <uses-library android:name="com.google.android.maps" /> <service android:name="net.c7j.wna.presentation.service.ForegroundService"/> <receiver android:name="net.c7j.wna.presentation.service.MyAlarmReceiver"> <intent-filter> <action android:name="com.example.helloandroid.alarms" /> </intent-filter> </receiver> <service android:name="net.c7j.wna.presentation.bootservice.AlarmSetService"/> <receiver android:name="net.c7j.wna.presentation.bootservice.BootReceiver" android:enabled="true"> <intent-filter> <action android:name="android.intent.action.BOOT_COMPLETED" /> </intent-filter> </receiver> <meta-data android:name="com.google.android.maps.v2.API_KEY" android:value="@string/google_maps_api_key" /> <activity android:name="net.c7j.wna.presentation.view.ActivityPlay" android:windowSoftInputMode="adjustResize" android:screenOrientation="portrait" android:launchMode="singleTask" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest> 

Here is build gradle file:

 apply plugin: 'com.android.application' apply plugin: 'com.jakewharton.butterknife' apply plugin: 'me.tatarka.retrolambda' android { compileSdkVersion 27 defaultConfig { applicationId "net.c7j.wna" minSdkVersion 21 targetSdkVersion 27 versionCode 1 versionName "1.0" javaCompileOptions { annotationProcessorOptions { arguments = ["room.schemaLocation": "$projectDir/schemas".toString()] } } } buildTypes { release { minifyEnabled false proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' } } packagingOptions { exclude 'META-INF/services/javax.annotation.processing.Processor' pickFirst 'META-INF/*' } // for butterknife lintOptions { disable 'ContentDescription' } compileOptions { sourceCompatibility JavaVersion.VERSION_1_8 targetCompatibility JavaVersion.VERSION_1_8 } } def ver = [:] ver.butterknife = "8.8.1" ver.constraint = "1.0.2" ver.glide = "3.8.0" ver.okhttp_logging_interceptor = "3.9.0" ver.picasso = "2.71828" ver.retrofit2 = "2.3.0" ver.room = "1.1.0-beta2" ver.rx_java2 = "2.1.3" ver.rx_android2 = "2.0.1" ver.stetho = "1.5.0" ver.support = "27.1.0" ver.play_services = "12.0.1"; // dependencies { implementation "com.google.firebase:firebase-core:$ver.play_services" implementation "com.google.android.gms:play-services-ads:$ver.play_services" implementation "com.google.android.gms:play-services-maps:$ver.play_services" implementation "com.android.support:appcompat-v7:$ver.support" implementation "com.android.support:recyclerview-v7:$ver.support" implementation "com.android.support:design:$ver.support" implementation "com.android.support.constraint:constraint-layout:$ver.constraint" implementation "com.jakewharton:butterknife:$ver.butterknife" annotationProcessor "com.jakewharton:butterknife-compiler:$ver.butterknife" implementation "com.squareup.picasso:picasso:$ver.picasso" implementation "io.reactivex.rxjava2:rxjava:$ver.rx_java2" implementation "io.reactivex.rxjava2:rxandroid:$ver.rx_android2" implementation "com.squareup.retrofit2:retrofit:$ver.retrofit2" implementation "com.squareup.retrofit2:converter-gson:$ver.retrofit2" implementation "com.squareup.retrofit2:adapter-rxjava2:$ver.retrofit2" implementation "android.arch.persistence.room:runtime:$ver.room" implementation "android.arch.persistence.room:rxjava2:$ver.room" annotationProcessor "android.arch.persistence.room:compiler:$ver.room" implementation "com.facebook.stetho:stetho:$ver.stetho" } //gradle assemble --stacktrace //Don't move this apply plugin above or project will fail to build apply plugin: 'com.google.gms.google-services' 

Root build.gradle:

 // Top-level build file where you can add configuration options common to all sub-projects/modules. buildscript { repositories { google() jcenter() mavenCentral() } dependencies { classpath 'com.android.tools.build:gradle:3.0.1' classpath 'com.jakewharton:butterknife-gradle-plugin:8.5.1' classpath 'com.google.gms:google-services:3.2.0' classpath 'me.tatarka:gradle-retrolambda:3.7.0' // 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 } 

After running gradle assemble --stacktrace :

Error:FAILURE: Build failed with an exception.

• What went wrong: Task 'gradle' not found in root project 'wna3'.

• Try: Run gradle tasks to get a list of available tasks. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

• Exception is: org.gradle.execution.TaskSelectionException: Task 'gradle' not found in root project 'wna3'. at org.gradle.execution.TaskSelector.getSelection(TaskSelector.java:116) at org.gradle.execution.TaskSelector.getSelection(TaskSelector.java:81) at org.gradle.execution.commandline.CommandLineTaskParser.parseTasks(CommandLineTaskParser.java:42) at org.gradle.execution.TaskNameResolvingBuildConfigurationAction.configure(TaskNameResolvingBuildConfigurationAction.java:44) at org.gradle.execution.DefaultBuildConfigurationActionExecuter.configure(DefaultBuildConfigurationActionExecuter.java:48) at org.gradle.execution.DefaultBuildConfigurationActionExecuter.access$000(DefaultBuildConfigurationActionExecuter.java:25) at org.gradle.execution.DefaultBuildConfigurationActionExecuter$1.proceed(DefaultBuildConfigurationActionExecuter.java:54) at org.gradle.execution.DefaultTasksBuildExecutionAction.configure(DefaultTasksBuildExecutionAction.java:44) at org.gradle.execution.DefaultBuildConfigurationActionExecuter.configure(DefaultBuildConfigurationActionExecuter.java:48) at org.gradle.execution.De faultBuildConfigurationActionExecuter.access$000(DefaultBuildConfigurationActionExecuter.java:25) at org.gradle.execution.DefaultBuildConfigurationActionExecuter$1.proceed(DefaultBuildConfigurationActionExecuter.java:54) at org.gradle.execution.ExcludedTaskFilteringBuildConfigurationAction.configure(ExcludedTaskFilteringBuildConfigurationAction.java:47) at org.gradle.execution.DefaultBuildConfigurationActionExecuter.configure(DefaultBuildConfigurationActionExecuter.java:48) at org.gradle.execution.DefaultBuildConfigurationActionExecuter.select(DefaultBuildConfigurationActionExecuter.java:36) at org.gradle.initialization.DefaultGradleLauncher$CalculateTaskGraph.run(DefaultGradleLauncher.java:268) 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.int ernal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:199) at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:110) at org.gradle.initialization.DefaultGradleLauncher.constructTaskGraph(DefaultGradleLauncher.java:175) at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:130) at org.gradle.initialization.DefaultGradleLauncher.executeTasks(DefaultGradleLauncher.java:109) at org.gradle.internal.invocation.GradleBuildController$1.call(GradleBuildController.java:78) at org.gradle.internal.invocation.GradleBuildController$1.call(GradleBuildController.java:75) at org.gradle.internal.work.DefaultWorkerLeaseService.withLocks(DefaultWorkerLeaseService.java:152) at org.gradle.internal.invocation.GradleBuildController.doBuild(GradleBuildController.java:100) at org.gradle.internal.invocation.GradleBuildController.run(GradleBuildController.java:75) at org.gradle.tooling.internal. provider.runner.BuildModelActionRunner.run(BuildModelActionRunner.java:53) at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35) at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35) at org.gradle.tooling.internal.provider.ValidatingBuildActionRunner.run(ValidatingBuildActionRunner.java:32) at org.gradle.launcher.exec.RunAsBuildOperationBuildActionRunner$1.run(RunAsBuildOperationBuildActionRunner.java:43) at org.gradle.internal.progress.DefaultBuildOperationExecutor$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.launc her.exec.RunAsBuildOperationBuildActionRunner.run(RunAsBuildOperationBuildActionRunner.java:40) at org.gradle.tooling.internal.provider.SubscribableBuildActionRunner.run(SubscribableBuildActionRunner.java:51) at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:47) at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:30) at org.gradle.launcher.exec.BuildTreeScopeBuildActionExecuter.execute(BuildTreeScopeBuildActionExecuter.java:39) at org.gradle.launcher.exec.BuildTreeScopeBuildActionExecuter.execute(BuildTreeScopeBuildActionExecuter.java:25) at org.gradle.tooling.internal.provider.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:80) at org.gradle.tooling.internal.provider.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:53) at org.gradle.tooling.internal.provider.ServicesSetupBuildActionExecuter.execute(ServicesSetupBuildActionExecuter.java:57) at org.gradle.tooling.internal.provider.ServicesSetupBuildActionExecuter.execute(ServicesSetupBuildActionExecuter.java:32) at org.gradle.tooling.internal.provider.GradleThreadBuildActionExecuter.execute(GradleThreadBuildActionExecuter.java:36) at org.gradle.tooling.internal.provider.GradleThreadBuildActionExecuter.execute(GradleThreadBuildActionExecuter.java:25) at org.gradle.tooling.internal.provider.ParallelismConfigurationBuildActionExecuter.execute(ParallelismConfigurationBuildActionExecuter.java:43) at org.gradle.tooling.internal.provider.ParallelismConfigurationBuildActionExecuter.execute(ParallelismConfigurationBuildActionExecuter.java:29) at org.gradle.tooling.internal.provider.StartParamsValidatingActionExecuter.execute(StartParamsValidatingActionExecuter.java:69) at org.gradle.tooling.internal.provider.StartParamsValidatingActionExecuter.execute(StartParamsValidatingActionExecuter.java:30) at org.gradle.tooling.internal.provider.SessionFailureReportingActionExecuter.execute(Ses sionFailureReportingActionExecuter.java:59) at org.gradle.tooling.internal.provider.SessionFailureReportingActionExecuter.execute(SessionFailureReportingActionExecuter.java:44) at org.gradle.tooling.internal.provider.SetupLoggingActionExecuter.execute(SetupLoggingActionExecuter.java:45) at org.gradle.tooling.internal.provider.SetupLoggingActionExecuter.execute(SetupLoggingActionExecuter.java:30) at org.gradle.launcher.daemon.server.exec.ExecuteBuild.doBuild(ExecuteBuild.java:67) at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36) at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:122) at org.gradle.launcher.daemon.server.exec.WatchForDisconnection.execute(WatchForDisconnection.java:37) at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:122) at org.gradle.launcher.daemon.server.exec.ResetDeprecationLogger.execute(ResetDeprecationLogger.java:26) at or g.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:122) at org.gradle.launcher.daemon.server.exec.RequestStopIfSingleUsedDaemon.execute(RequestStopIfSingleUsedDaemon.java:34) at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:122) at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:74) at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:72) at org.gradle.util.Swapper.swap(Swapper.java:38) at org.gradle.launcher.daemon.server.exec.ForwardClientInput.execute(ForwardClientInput.java:72) at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:122) at org.gradle.launcher.daemon.server.exec.LogAndCheckHealth.execute(LogAndCheckHealth.java:55) at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:122) at org.gradle.launcher.daemon.ser ver.exec.LogToClient.doBuild(LogToClient.java:62) at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36) at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:122) at org.gradle.launcher.daemon.server.exec.EstablishBuildEnvironment.doBuild(EstablishBuildEnvironment.java:82) at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36) at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:122) at org.gradle.launcher.daemon.server.exec.StartBuildOrRespondWithBusy$1.run(StartBuildOrRespondWithBusy.java:50) at org.gradle.launcher.daemon.server.DaemonStateCoordinator$1.run(DaemonStateCoordinator.java:295) at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63) at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46) at org.gradle.internal.concurrent.Th readFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)

• Get more help at https://help.gradle.org

BUILD FAILED in 3s

Full stack trace:

org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':app:packageDebug'. at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:100) at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:70) at org.gradle.api.internal.tasks.execution.OutputDirectoryCreatingTaskExecuter.execute(OutputDirectoryCreatingTaskExecuter.java:51) at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:62) at org.gradle.api.internal.tasks.execution.ResolveTaskOutputCachingStateExecuter.execute(ResolveTaskOutputCachingStateExecuter.java:54) at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:60) at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:97) at org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:87) at org.gradle.api.internal.tasks.execu tion.ResolveTaskArtifactStateTaskExecuter.execute(ResolveTaskArtifactStateTaskExecuter.java:52) at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52) 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$1.run(DefaultTaskGraphExecuter.java:248) at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336) at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328) at org.gradle.internal.progress.DefaultBuild OperationExecutor.execute(DefaultBuildOperationExecutor.java:199) at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:110) at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:241) at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:230) at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$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$1.execute(DefaultTaskPlanExecutor.java:98) at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.execute(DefaultTaskExecutionPlan.jav a:626) at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.executeWithTask(DefaultTaskExecutionPlan.java:581) at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$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$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55) at java.lang.Thread.run(Thread.java:745) Caused by: org.gradle.tooling.BuildException: java.io.IOException: Failed to generate v1 signature at com.android.build.gradle.internal.scope.OutputScope.lambda$parallelForEachOutput$10(OutputScope.java:241) at java.util.ArrayList.forEach(ArrayList.java:1251) at com.android.build.gradle.internal.scope.OutputScope.parallelForEachOutput(OutputScope.java:236) at com.android.build.gradle.internal.scope.OutputScope.parallelForEachOutput(OutputScope.java:197) at com.android.build.gradle.internal.scope.OutputScope.parallelForEachOutput(OutputScope.java:181) at com.android.build.gradle.tasks.PackageAndroidArtifact.doFullTaskAction(PackageAndroidArtifact.java:471) at com.android.build.gradle.internal.tasks.IncrementalTask.taskAction(IncrementalTask.java:109) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 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:46) at org.gradle.api.internal.project.tas kfactory.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$1.run(ExecuteActionsTaskExecuter.java:121) at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336) at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328) at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:199) at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:110) at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:110) at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExe cuter.java:92) ... 32 more Caused by: java.lang.RuntimeException: java.io.IOException: Failed to generate v1 signature at java.util.concurrent.ForkJoinTask$AdaptedCallable.exec(ForkJoinTask.java:1431) at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289) at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056) at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692) at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157) Caused by: java.io.IOException: Failed to generate v1 signature at com.android.apkzlib.sign.SigningExtension.onOutputZipReadyForUpdate(SigningExtension.java:297) at com.android.apkzlib.sign.SigningExtension.access$200(SigningExtension.java:55) at com.android.apkzlib.sign.SigningExtension$1.lambda$beforeUpdate$2(SigningExtension.java:175) at com.android.apkzlib.zip.ZFile.notify(ZFile.java:2099) at com.android.apkzlib.zip.ZFile.update(ZFile.java:871) at com.android.apkzlib.zip.ZFile.close(ZFile.java :1161) at com.android.apkzlib.zfile.ApkZFileCreator.close(ApkZFileCreator.java:189) at com.google.common.io.Closer.close(Closer.java:216) at com.android.builder.internal.packaging.IncrementalPackager.close(IncrementalPackager.java:332) at com.android.build.gradle.tasks.PackageAndroidArtifact.doTask(PackageAndroidArtifact.java:700) at com.android.build.gradle.tasks.PackageAndroidArtifact.splitFullAction(PackageAndroidArtifact.java:522) at com.android.build.gradle.internal.scope.OutputScope.lambda$parallelForEachOutput$6(OutputScope.java:186) at com.android.build.gradle.internal.scope.OutputScope.lambda$parallelForEachOutput$7(OutputScope.java:203) at com.android.build.gradle.internal.scope.OutputScope.lambda$null$8(OutputScope.java:225) at java.util.concurrent.ForkJoinTask$AdaptedCallable.exec(ForkJoinTask.java:1424) ... 4 more Caused by: java.lang.IllegalArgumentException: Mandatory Manifest-Version attribute missing at com.android.apksig.internal.jar.ManifestWriter.writeMainSection(Ma nifestWriter.java:47) at com.android.apksig.internal.apk.v1.V1SchemeSigner.generateManifestFile(V1SchemeSigner.java:363) at com.android.apksig.internal.apk.v1.V1SchemeSigner.sign(V1SchemeSigner.java:253) at com.android.apksig.DefaultApkSignerEngine.outputJarEntries(DefaultApkSignerEngine.java:372) at com.android.apkzlib.sign.SigningExtension.onOutputZipReadyForUpdate(SigningExtension.java:295) ... 18 more

Answer 1

packagingOptions {
        exclude 'META-INF/services/javax.annotation.processing.Processor'
        pickFirst 'META-INF/*'
    } // for butterknife

This lines was the reason. Removed and all's fine.