Could not get unknown property 'classesDir' for main classes

I have run gradle build --stacktrace . I have replaced the version with latest version of gradle-appengine-plugin.
Here is my 2 build.gradle file of app engine.

apply plugin: ‘war’
apply plugin: ‘appengine’

war {
version = ‘1.0’
expand appengineProjectName: appengineProject
}

appengine {
version = ‘1’
project = appengineProject
downloadSdk = true
}

dependencies {
compile ‘javax.servlet:servlet-api:2.5’
compile ‘jstl:jstl:1.2’
compile ‘com.googlecode.objectify:objectify:6.0.4’
compile ‘com.google.endpoints:endpoints-framework:2.2.1’
appengineSdk ‘com.google.appengine:appengine-java-sdk:1.9.76’
}

another build.gradle

buildscript {
repositories {
mavenCentral()
}

dependencies {
    classpath 'com.google.appengine:gradle-appengine-plugin:1.9.59'
}

}

subprojects {
repositories {
mavenCentral()
}

apply plugin: 'java'
sourceCompatibility = '1.8'
targetCompatibility = '1.8'
tasks.withType(JavaCompile) { options.encoding = 'UTF-8' }

dependencies {
}

}

  • Exception is:
    org.gradle.api.GradleScriptException: A problem occurred evaluating project ‘:endpoints-frontend’.
    at org.gradle.groovy.scripts.internal.DefaultScriptRunnerFactory$ScriptRunnerImpl.run(DefaultScriptRunnerFactory.java:93)
    at org.gradle.configuration.DefaultScriptPluginFactory$ScriptPluginImpl$2.run(DefaultScriptPluginFactory.java:227)
    at org.gradle.configuration.ProjectScriptTarget.addConfiguration(ProjectScriptTarget.java:77)
    at org.gradle.configuration.DefaultScriptPluginFactory$ScriptPluginImpl.apply(DefaultScriptPluginFactory.java:232)
    at org.gradle.configuration.BuildOperationScriptPlugin$1$1.run(BuildOperationScriptPlugin.java:69)
    at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:402)
    at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:394)
    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.run(DefaultBuildOperationExecutor.java:92)
    at org.gradle.internal.operations.DelegatingBuildOperationExecutor.run(DelegatingBuildOperationExecutor.java:31) at org.gradle.configuration.BuildOperationScriptPlugin$1.execute(BuildOperationScriptPlugin.java:66)
    at org.gradle.configuration.BuildOperationScriptPlugin$1.execute(BuildOperationScriptPlugin.java:63)
    at org.gradle.configuration.internal.DefaultUserCodeApplicationContext.apply(DefaultUserCodeApplicationContext.java:49)
    at org.gradle.configuration.BuildOperationScriptPlugin.apply(BuildOperationScriptPlugin.java:63)
    at org.gradle.configuration.project.BuildScriptProcessor$1.run(BuildScriptProcessor.java:45)
    at org.gradle.internal.Factories$1.create(Factories.java:26)
    at org.gradle.api.internal.project.DefaultProjectStateRegistry$ProjectStateImpl.withMutableState(DefaultProjectStateRegistry.java:201)
    at org.gradle.api.internal.project.DefaultProjectStateRegistry$ProjectStateImpl.withMutableState(DefaultProjectStateRegistry.java:187)
    at org.gradle.configuration.project.BuildScriptProcessor.execute(BuildScriptProcessor.java:42)
    at org.gradle.configuration.project.BuildScriptProcessor.execute(BuildScriptProcessor.java:26)
    at org.gradle.configuration.project.ConfigureActionsProjectEvaluator.evaluate(ConfigureActionsProjectEvaluator.java:35)
    at org.gradle.configuration.project.LifecycleProjectEvaluator$EvaluateProject$1.run(LifecycleProjectEvaluator.java:107)
    at org.gradle.internal.Factories$1.create(Factories.java:26)
    at org.gradle.internal.work.DefaultWorkerLeaseService.withLocks(DefaultWorkerLeaseService.java:189)
    at org.gradle.internal.work.StopShieldingWorkerLeaseService.withLocks(StopShieldingWorkerLeaseService.java:40)
    at org.gradle.api.internal.project.DefaultProjectStateRegistry$ProjectStateImpl.withProjectLock(DefaultProjectStateRegistry.java:227)
    at org.gradle.api.internal.project.DefaultProjectStateRegistry$ProjectStateImpl.withMutableState(DefaultProjectStateRegistry.java:221)
    at org.gradle.api.internal.project.DefaultProjectStateRegistry$ProjectStateImpl.withMutableState(DefaultProjectStateRegistry.java:187)
    at org.gradle.configuration.project.LifecycleProjectEvaluator$EvaluateProject.run(LifecycleProjectEvaluator.java:96)
    at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:402)
    at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:394)
    at org.gradle.internal.operations.DefaultBuildOperationExecutor$1.execute(DefaultBuildOperationExecutor.java:165)
    at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:250)
    at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:158)
    at org.gradle.internal.operations.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:92)
    at org.gradle.internal.operations.DelegatingBuildOperationExecutor.run(DelegatingBuildOperationExecutor.java:31) at org.gradle.configuration.project.LifecycleProjectEvaluator.evaluate(LifecycleProjectEvaluator.java:68)
    at org.gradle.api.internal.project.DefaultProject.evaluate(DefaultProject.java:693)
    at org.gradle.api.internal.project.DefaultProject.evaluate(DefaultProject.java:141)
    at org.gradle.execution.TaskPathProjectEvaluator.configure(TaskPathProjectEvaluator.java:36)
    at org.gradle.execution.TaskPathProjectEvaluator.configureHierarchy(TaskPathProjectEvaluator.java:64)
    at org.gradle.configuration.DefaultProjectsPreparer.prepareProjects(DefaultProjectsPreparer.java:55)
    at org.gradle.configuration.BuildOperatingFiringProjectsPreparer$ConfigureBuild.run(BuildOperatingFiringProjectsPreparer.java:52)
    at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:402)
    at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:394)
    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.run(DefaultBuildOperationExecutor.java:92)
    at org.gradle.internal.operations.DelegatingBuildOperationExecutor.run(DelegatingBuildOperationExecutor.java:31) at org.gradle.configuration.BuildOperatingFiringProjectsPreparer.prepareProjects(BuildOperatingFiringProjectsPreparer.java:40)
    at org.gradle.initialization.DefaultGradleLauncher.prepareProjects(DefaultGradleLauncher.java:198)
    at org.gradle.initialization.DefaultGradleLauncher.doClassicBuildStages(DefaultGradleLauncher.java:138)
    at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:126)
    at org.gradle.initialization.DefaultGradleLauncher.executeTasks(DefaultGradleLauncher.java:106)
    at org.gradle.internal.invocation.GradleBuildController$1.execute(GradleBuildController.java:60)
    at org.gradle.internal.invocation.GradleBuildController$1.execute(GradleBuildController.java:57)
    at org.gradle.internal.invocation.GradleBuildController$3.create(GradleBuildController.java:85)
    at org.gradle.internal.invocation.GradleBuildController$3.create(GradleBuildController.java:78)
    at org.gradle.internal.work.DefaultWorkerLeaseService.withLocks(DefaultWorkerLeaseService.java:189)
    at org.gradle.internal.work.StopShieldingWorkerLeaseService.withLocks(StopShieldingWorkerLeaseService.java:40)
    at org.gradle.internal.invocation.GradleBuildController.doBuild(GradleBuildController.java:78)
    at org.gradle.internal.invocation.GradleBuildController.run(GradleBuildController.java:57)
    at org.gradle.tooling.internal.provider.ExecuteBuildActionRunner.run(ExecuteBuildActionRunner.java:31)
    at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35)
    at org.gradle.launcher.exec.BuildOutcomeReportingBuildActionRunner.run(BuildOutcomeReportingBuildActionRunner.java:63)
    at org.gradle.tooling.internal.provider.ValidatingBuildActionRunner.run(ValidatingBuildActionRunner.java:32)
    at org.gradle.launcher.exec.BuildCompletionNotifyingBuildActionRunner.run(BuildCompletionNotifyingBuildActionRunner.java:39)
    at org.gradle.launcher.exec.RunAsBuildOperationBuildActionRunner$3.call(RunAsBuildOperationBuildActionRunner.java:51)
    at org.gradle.launcher.exec.RunAsBuildOperationBuildActionRunner$3.call(RunAsBuildOperationBuildActionRunner.java:45)
    at org.gradle.internal.operations.DefaultBuildOperationExecutor$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.launcher.exec.RunAsBuildOperationBuildActionRunner.run(RunAsBuildOperationBuildActionRunner.java:45)
    at org.gradle.launcher.exec.InProcessBuildActionExecuter$1.transform(InProcessBuildActionExecuter.java:50)
    at org.gradle.launcher.exec.InProcessBuildActionExecuter$1.transform(InProcessBuildActionExecuter.java:47)
    at org.gradle.composite.internal.DefaultRootBuildState.run(DefaultRootBuildState.java:78)
    at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:47)
    at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:31)
    at org.gradle.launcher.exec.BuildTreeScopeBuildActionExecuter.execute(BuildTreeScopeBuildActionExecuter.java:42) at org.gradle.launcher.exec.BuildTreeScopeBuildActionExecuter.execute(BuildTreeScopeBuildActionExecuter.java:28) at org.gradle.tooling.internal.provider.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:78)
    at org.gradle.tooling.internal.provider.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:52)
    at org.gradle.tooling.internal.provider.SubscribableBuildActionExecuter.execute(SubscribableBuildActionExecuter.java:59)
    at org.gradle.tooling.internal.provider.SubscribableBuildActionExecuter.execute(SubscribableBuildActionExecuter.java:36)
    at org.gradle.tooling.internal.provider.SessionScopeBuildActionExecuter.execute(SessionScopeBuildActionExecuter.java:68)
    at org.gradle.tooling.internal.provider.SessionScopeBuildActionExecuter.execute(SessionScopeBuildActionExecuter.java:38)
    at org.gradle.tooling.internal.provider.GradleThreadBuildActionExecuter.execute(GradleThreadBuildActionExecuter.java:37)
    at org.gradle.tooling.internal.provider.GradleThreadBuildActionExecuter.execute(GradleThreadBuildActionExecuter.java:26)
    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:60)
    at org.gradle.tooling.internal.provider.StartParamsValidatingActionExecuter.execute(StartParamsValidatingActionExecuter.java:32)
    at org.gradle.tooling.internal.provider.SessionFailureReportingActionExecuter.execute(SessionFailureReportingActionExecuter.java:55)
    at org.gradle.tooling.internal.provider.SessionFailureReportingActionExecuter.execute(SessionFailureReportingActionExecuter.java:41)
    at org.gradle.tooling.internal.provider.SetupLoggingActionExecuter.execute(SetupLoggingActionExecuter.java:48)
    at org.gradle.tooling.internal.provider.SetupLoggingActionExecuter.execute(SetupLoggingActionExecuter.java:32)
    at org.gradle.launcher.daemon.server.exec.ExecuteBuild.doBuild(ExecuteBuild.java:68)
    at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:37)
    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:104)
    at org.gradle.launcher.daemon.server.exec.WatchForDisconnection.execute(WatchForDisconnection.java:39)
    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:104)
    at org.gradle.launcher.daemon.server.exec.ResetDeprecationLogger.execute(ResetDeprecationLogger.java:27)
    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:104)
    at org.gradle.launcher.daemon.server.exec.RequestStopIfSingleUsedDaemon.execute(RequestStopIfSingleUsedDaemon.java:35)
    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:104)
    at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.create(ForwardClientInput.java:78)
    at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.create(ForwardClientInput.java:75)
    at org.gradle.util.Swapper.swap(Swapper.java:38)
    at org.gradle.launcher.daemon.server.exec.ForwardClientInput.execute(ForwardClientInput.java:75)
    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:104)
    at org.gradle.launcher.daemon.server.exec.LogAndCheckHealth.execute(LogAndCheckHealth.java:55)
    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:104)
    at org.gradle.launcher.daemon.server.exec.LogToClient.doBuild(LogToClient.java:63)
    at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:37)
    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:104)
    at org.gradle.launcher.daemon.server.exec.EstablishBuildEnvironment.doBuild(EstablishBuildEnvironment.java:82)
    at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:37)
    at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:104)
    at org.gradle.launcher.daemon.server.exec.StartBuildOrRespondWithBusy$1.run(StartBuildOrRespondWithBusy.java:52) at org.gradle.launcher.daemon.server.DaemonStateCoordinator$1.run(DaemonStateCoordinator.java:297)
    at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64)
    at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:48)
    at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:56)
    Caused by: org.gradle.api.internal.plugins.PluginApplicationException: Failed to apply plugin [id ‘appengine’]
    at org.gradle.api.internal.plugins.DefaultPluginManager.doApply(DefaultPluginManager.java:167)
    at org.gradle.api.internal.plugins.DefaultPluginManager.apply(DefaultPluginManager.java:136)
    at org.gradle.api.internal.plugins.DefaultObjectConfigurationAction.applyType(DefaultObjectConfigurationAction.java:129)
    at org.gradle.api.internal.plugins.DefaultObjectConfigurationAction.access$200(DefaultObjectConfigurationAction.java:38)
    at org.gradle.api.internal.plugins.DefaultObjectConfigurationAction$3.run(DefaultObjectConfigurationAction.java:93)
    at org.gradle.api.internal.plugins.DefaultObjectConfigurationAction.execute(DefaultObjectConfigurationAction.java:152)
    at org.gradle.api.internal.project.AbstractPluginAware.apply(AbstractPluginAware.java:49)
    at org.gradle.api.internal.project.ProjectScript.apply(ProjectScript.java:41)
    at org.gradle.api.Script$apply$0.callCurrent(Unknown Source)
    at build_8b22785q6jssk5smw9nrptcup.run(D:\Cloud\appengine-potpourri\endpoints-frontend\build.gradle:2)
    at org.gradle.groovy.scripts.internal.DefaultScriptRunnerFactory$ScriptRunnerImpl.run(DefaultScriptRunnerFactory.java:91)
    … 129 more
    Caused by: groovy.lang.MissingPropertyException: Could not get unknown property ‘classesDir’ for functional test classes of type org.gradle.api.internal.tasks.DefaultSourceSetOutput.
    at org.gradle.internal.metaobject.AbstractDynamicObject.getMissingProperty(AbstractDynamicObject.java:84)
    at org.gradle.internal.metaobject.AbstractDynamicObject.getProperty(AbstractDynamicObject.java:61)
    at org.gradle.api.internal.tasks.DefaultSourceSetOutput_Decorated.getProperty(Unknown Source)
    at com.google.appengine.AppEnginePlugin.configureFunctionalTest(AppEnginePlugin.groovy:666)
    at com.google.appengine.AppEnginePlugin.apply(AppEnginePlugin.groovy:173)
    at com.google.appengine.AppEnginePlugin.apply(AppEnginePlugin.groovy)
    at org.gradle.api.internal.plugins.ImperativeOnlyPluginTarget.applyImperative(ImperativeOnlyPluginTarget.java:43)
    at org.gradle.api.internal.plugins.RuleBasedPluginTarget.applyImperative(RuleBasedPluginTarget.java:51)
    at org.gradle.api.internal.plugins.DefaultPluginManager.addPlugin(DefaultPluginManager.java:181)
    at org.gradle.api.internal.plugins.DefaultPluginManager.access$300(DefaultPluginManager.java:51)
    at org.gradle.api.internal.plugins.DefaultPluginManager$AddPluginBuildOperation.run(DefaultPluginManager.java:276)
    at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:402)
    at org.gradle.internal.operations.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:394)
    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.run(DefaultBuildOperationExecutor.java:92)
    at org.gradle.internal.operations.DelegatingBuildOperationExecutor.run(DelegatingBuildOperationExecutor.java:31) at org.gradle.api.internal.plugins.DefaultPluginManager$2.execute(DefaultPluginManager.java:159)
    at org.gradle.api.internal.plugins.DefaultPluginManager$2.execute(DefaultPluginManager.java:156)
    at org.gradle.configuration.internal.DefaultUserCodeApplicationContext.apply(DefaultUserCodeApplicationContext.java:49)
    at org.gradle.api.internal.plugins.DefaultPluginManager.doApply(DefaultPluginManager.java:156)
    … 139 more

Here’s the problem

Caused by: groovy.lang.MissingPropertyException: Could not get unknown property ‘classesDir’ for functional test classes of type org.gradle.api.internal.tasks.DefaultSourceSetOutput.
at org.gradle.internal.metaobject.AbstractDynamicObject.getMissingProperty(AbstractDynamicObject.java:84)
at org.gradle.internal.metaobject.AbstractDynamicObject.getProperty(AbstractDynamicObject.java:61)
at org.gradle.api.internal.tasks.DefaultSourceSetOutput_Decorated.getProperty(Unknown Source)
at com.google.appengine.AppEnginePlugin.configureFunctionalTest(AppEnginePlugin.groovy:666)
at com.google.appengine.AppEnginePlugin.apply(AppEnginePlugin.groovy:173)
at com.google.appengine.AppEnginePlugin.apply(AppEnginePlugin.groovy)
a

Caused by line 666 in AppEnginePlugin.groovy

I suggest you raise an issue and perhaps even provide a pull request to the AppEnginePlugin.

Or you could use gradle 4.x instead of 5.x

Thanks Lance. I have already raised a concern on this.

It seems you linked your issue to another issue but you didn’t read the resolution.

The plugin has moved from here to here and is now at version 2.1.0.

You should be able to fix your issue by changing to

buildscript {
  repositories {
    mavenCentral()
  }

  dependencies {
    classpath 'com.google.cloud.tools:appengine-gradle-plugin:2.1.0'
  }
}