Waited 30 seconds for com.google.common.util.concurrent.SettableFuture@1e023601[status=PENDING]

Question

I have been encountering an error I that I have never seen before and it started showing up when my project couldnt find the bilder .jar file and redownload it and and it show the error below even in a new project after adding any kind of dependency and I'm using Android studio 3.2.0 Please help

org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':app:mergeDebugResources'.
    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: org.gradle.internal.UncheckedException: java.util.concurrent.ExecutionException: com.android.builder.internal.aapt.v2.Aapt2InternalException: AAPT2 aapt2-3.2.0-beta05-4818971-windows Daemon #0: Daemon startup failed
This should not happen under normal circumstances, please file an issue if it does.
    at org.gradle.internal.UncheckedException.throwAsUncheckedException(UncheckedException.java:63)
    at org.gradle.internal.UncheckedException.throwAsUncheckedException(UncheckedException.java:40)
    at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:76)
    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: java.util.concurrent.ExecutionException: com.android.builder.internal.aapt.v2.Aapt2InternalException: AAPT2 aapt2-3.2.0-beta05-4818971-windows Daemon #0: Daemon startup failed
This should not happen under normal circumstances, please file an issue if it does.
    at java.util.concurrent.ForkJoinTask.get(ForkJoinTask.java:1006)
    at com.android.ide.common.workers.ExecutorServiceAdapter.close(ExecutorServiceAdapter.kt:56)
    at com.android.build.gradle.internal.aapt.WorkerExecutorResourceCompilationService.close(WorkerExecutorResourceCompilationService.kt:67)
    at com.android.build.gradle.tasks.MergeResources.doFullTaskAction(MergeResources.java:324)
    at com.android.build.gradle.internal.tasks.IncrementalTask.taskAction(IncrementalTask.java:106)
    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)
    ... 43 more
Caused by: com.android.builder.internal.aapt.v2.Aapt2InternalException: AAPT2 aapt2-3.2.0-beta05-4818971-windows Daemon #0: Daemon startup failed
This should not happen under normal circumstances, please file an issue if it does.
    at com.android.builder.internal.aapt.v2.Aapt2Daemon.handleError(Aapt2Daemon.kt:148)
    at com.android.builder.internal.aapt.v2.Aapt2Daemon.checkStarted(Aapt2Daemon.kt:57)
    at com.android.builder.internal.aapt.v2.Aapt2Daemon.compile(Aapt2Daemon.kt:79)
    at com.android.builder.internal.aapt.v2.Aapt2DaemonManager$LeasedAaptDaemon.compile(Aapt2DaemonManager.kt:170)
    at com.android.build.gradle.internal.res.Aapt2CompileWithBlameRunnable$run$1.invoke(Aapt2CompileWithBlameRunnable.kt:37)
    at com.android.build.gradle.internal.res.Aapt2CompileWithBlameRunnable$run$1.invoke(Aapt2CompileWithBlameRunnable.kt:28)
    at com.android.build.gradle.internal.res.namespaced.Aapt2DaemonManagerService.useAaptDaemon(Aapt2DaemonManagerService.kt:71)
    at com.android.build.gradle.internal.res.namespaced.Aapt2DaemonManagerService.useAaptDaemon$default(Aapt2DaemonManagerService.kt:69)
    at com.android.build.gradle.internal.res.Aapt2CompileWithBlameRunnable.run(Aapt2CompileWithBlameRunnable.kt:34)
    at com.android.ide.common.workers.ExecutorServiceAdapter$submit$submission$1.run(ExecutorServiceAdapter.kt:39)
    at java.util.concurrent.ForkJoinTask$AdaptedRunnableAction.exec(ForkJoinTask.java:1386)
    at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
    at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)
    at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692)
    at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)
Caused by: com.android.builder.internal.aapt.v2.Aapt2InternalException: Failed to start AAPT2 process AAPT2 aapt2-3.2.0-beta05-4818971-windows Daemon #0. Not ready within 30 seconds.
    at com.android.builder.internal.aapt.v2.Aapt2DaemonImpl.stopQuietly(Aapt2DaemonImpl.kt:122)
    at com.android.builder.internal.aapt.v2.Aapt2DaemonImpl.startProcess(Aapt2DaemonImpl.kt:102)
    at com.android.builder.internal.aapt.v2.Aapt2Daemon.checkStarted(Aapt2Daemon.kt:53)
    ... 13 more
    Suppressed: java.util.concurrent.TimeoutException: AAPT2 aapt2-3.2.0-beta05-4818971-windows Daemon #0: Failed to shut down within 30 seconds. Forcing shutdown
        at com.android.builder.internal.aapt.v2.Aapt2DaemonImpl.stopProcess(Aapt2DaemonImpl.kt:209)
        at com.android.builder.internal.aapt.v2.Aapt2DaemonImpl.stopQuietly(Aapt2DaemonImpl.kt:124)
        ... 15 more
Caused by: java.util.concurrent.TimeoutException: Waited 30 seconds for com.google.common.util.concurrent.SettableFuture@1e023601[status=PENDING]
    at com.google.common.util.concurrent.AbstractFuture.get(AbstractFuture.java:442)
    at com.google.common.util.concurrent.AbstractFuture$TrustedFuture.get(AbstractFuture.java:90)
    at com.android.builder.internal.aapt.v2.Aapt2DaemonImpl.startProcess(Aapt2DaemonImpl.kt:100)
    ... 14 more

This is the log the error it shows is just like the title

Answer 1

- Right Click On File Tab
- invalidate Caches and Restart
- confirm to invalidate and Restart
- studio closed and restarted automatically within few sec or minutes

• your problem will solve ( in my case solved )