FAILURE: Build failed with an exception.

* What went wrong:
A problem occurred configuring project ':Mobius'.
> Exception thrown while executing model rule: BaseComponentModelPlugin.Rules#createBinaryTasks
   > java.lang.NullPointerException (no error message)

* Try:
Run with --debug option to get more log output.

* Exception is:
org.gradle.api.ProjectConfigurationException: A problem occurred configuring project ':Mobius'.
	at org.gradle.execution.TaskNameResolver.selfClosedTasksNode(TaskNameResolver.java:111)
	at org.gradle.execution.TaskNameResolver.hasTask(TaskNameResolver.java:123)
	at org.gradle.execution.TaskNameResolver.access$100(TaskNameResolver.java:38)
	at org.gradle.execution.TaskNameResolver$MultiProjectTaskSelectionResult.collect(TaskNameResolver.java:190)
	at org.gradle.execution.TaskNameResolver$MultiProjectTaskSelectionResult.collect(TaskNameResolver.java:198)
	at org.gradle.execution.TaskNameResolver$MultiProjectTaskSelectionResult.collectTasks(TaskNameResolver.java:186)
	at org.gradle.execution.TaskNameResolver.selectWithName(TaskNameResolver.java:61)
	at org.gradle.execution.TaskSelector.getSelection(TaskSelector.java:87)
	at org.gradle.execution.TaskSelector.getSelection(TaskSelector.java:75)
	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.DefaultBuildConfigurationActionExecuter.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$3.run(DefaultGradleLauncher.java:143)
	at org.gradle.internal.Factories$1.create(Factories.java:22)
	at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:90)
	at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:52)
	at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:140)
	at org.gradle.initialization.DefaultGradleLauncher.access$200(DefaultGradleLauncher.java:32)
	at org.gradle.initialization.DefaultGradleLauncher$1.create(DefaultGradleLauncher.java:99)
	at org.gradle.initialization.DefaultGradleLauncher$1.create(DefaultGradleLauncher.java:93)
	at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:90)
	at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:62)
	at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:93)
	at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLauncher.java:82)
	at org.gradle.launcher.exec.InProcessBuildActionExecuter$DefaultBuildController.run(InProcessBuildActionExecuter.java:94)
	at org.gradle.tooling.internal.provider.ExecuteBuildActionRunner.run(ExecuteBuildActionRunner.java:28)
	at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35)
	at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:43)
	at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:28)
	at org.gradle.launcher.exec.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:78)
	at org.gradle.launcher.exec.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:48)
	at org.gradle.launcher.exec.DaemonUsageSuggestingBuildActionExecuter.execute(DaemonUsageSuggestingBuildActionExecuter.java:51)
	at org.gradle.launcher.exec.DaemonUsageSuggestingBuildActionExecuter.execute(DaemonUsageSuggestingBuildActionExecuter.java:28)
	at org.gradle.launcher.cli.RunBuildAction.run(RunBuildAction.java:43)
	at org.gradle.internal.Actions$RunnableActionAdapter.execute(Actions.java:170)
	at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:237)
	at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:210)
	at org.gradle.launcher.cli.JavaRuntimeValidationAction.execute(JavaRuntimeValidationAction.java:35)
	at org.gradle.launcher.cli.JavaRuntimeValidationAction.execute(JavaRuntimeValidationAction.java:24)
	at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:206)
	at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:169)
	at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:33)
	at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:22)
	at org.gradle.launcher.Main.doAction(Main.java:33)
	at org.gradle.launcher.bootstrap.EntryPoint.run(EntryPoint.java:45)
	at org.gradle.launcher.bootstrap.ProcessBootstrap.runNoExit(ProcessBootstrap.java:54)
	at org.gradle.launcher.bootstrap.ProcessBootstrap.run(ProcessBootstrap.java:35)
	at org.gradle.launcher.GradleMain.main(GradleMain.java:23)
	at org.gradle.wrapper.BootstrapMainStarter.start(BootstrapMainStarter.java:33)
	at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:130)
	at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:48)
Caused by: org.gradle.model.internal.core.ModelRuleExecutionException: Exception thrown while executing model rule: BaseComponentModelPlugin.Rules#createBinaryTasks
	at org.gradle.model.internal.registry.DefaultModelRegistry.fireAction(DefaultModelRegistry.java:488)
	at org.gradle.model.internal.registry.DefaultModelRegistry.access$1400(DefaultModelRegistry.java:44)
	at org.gradle.model.internal.registry.DefaultModelRegistry$RunModelAction.apply(DefaultModelRegistry.java:1511)
	at org.gradle.model.internal.registry.DefaultModelRegistry.transitionTo(DefaultModelRegistry.java:379)
	at org.gradle.model.internal.registry.DefaultModelRegistry.transition(DefaultModelRegistry.java:457)
	at org.gradle.model.internal.registry.DefaultModelRegistry.atStateOrMaybeLater(DefaultModelRegistry.java:191)
	at org.gradle.model.internal.registry.DefaultModelRegistry.atStateOrLater(DefaultModelRegistry.java:178)
	at org.gradle.execution.TaskNameResolver.selfClose(TaskNameResolver.java:101)
	at org.gradle.execution.TaskNameResolver.selfClosedTasksNode(TaskNameResolver.java:109)
	... 59 more
Caused by: java.lang.NullPointerException
	at com.android.build.gradle.managed.adaptor.BuildTypeAdaptor.isUseProguard(BuildTypeAdaptor.java:113)
	at com.android.build.gradle.internal.TaskManager.doCreateMinifyTransform(TaskManager.java:2682)
	at com.android.build.gradle.internal.TaskManager.createMinifyTransform(TaskManager.java:2667)
	at com.android.build.gradle.internal.TaskManager.createPostCompilationTasks(TaskManager.java:1933)
	at com.android.build.gradle.internal.ApplicationTaskManager$9.call(ApplicationTaskManager.java:178)
	at com.android.build.gradle.internal.ApplicationTaskManager$9.call(ApplicationTaskManager.java:167)
	at com.android.builder.profile.ThreadRecorder$1.record(ThreadRecorder.java:55)
	at com.android.builder.profile.ThreadRecorder$1.record(ThreadRecorder.java:47)
	at com.android.build.gradle.internal.ApplicationTaskManager.createTasksForVariantData(ApplicationTaskManager.java:166)
	at com.android.build.gradle.internal.VariantManager.createTasksForVariantData(VariantManager.java:450)
	at com.android.build.gradle.model.BaseComponentModelPlugin$Rules.createBinaryTasks(BaseComponentModelPlugin.java:597)
	at org.gradle.model.internal.method.WeaklyTypeReferencingMethod.invoke(WeaklyTypeReferencingMethod.java:96)
	at org.gradle.model.internal.inspect.DefaultModelRuleInvoker.invoke(DefaultModelRuleInvoker.java:37)
	at org.gradle.model.internal.inspect.MethodBackedModelAction.execute(MethodBackedModelAction.java:43)
	at org.gradle.model.internal.core.AbstractModelActionWithView.execute(AbstractModelActionWithView.java:46)
	at org.gradle.model.internal.registry.DefaultModelRegistry$2.run(DefaultModelRegistry.java:483)
	at org.gradle.model.internal.registry.RuleContext.run(RuleContext.java:59)
	at org.gradle.model.internal.registry.DefaultModelRegistry.fireAction(DefaultModelRegistry.java:480)
	... 67 more