i am getting this exception, can someone helop please?
thank you
Exception in thread "main" com.google.api.gax.rpc.UnavailableException:
io.grpc.StatusRuntimeException: UNAVAILABLE: Credentials failed to obtain
metadata
at
com.google.api.gax.rpc.ApiExceptionFactory.createException(ApiExceptionFactory.java:69)
at
com.google.api.gax.grpc.GrpcApiExceptionFactory.create(GrpcApiExceptionFactory.java:72)
at
com.google.api.gax.grpc.GrpcApiExceptionFactory.create(GrpcApiExceptionFactory.java:60)
at
com.google.api.gax.grpc.ExceptionResponseObserver.onErrorImpl(ExceptionResponseObserver.java:82)
at
com.google.api.gax.rpc.StateCheckingResponseObserver.onError(StateCheckingResponseObserver.java:86)
at
com.google.api.gax.grpc.GrpcDirectStreamController$ResponseObserverAdapter.onClose(GrpcDirectStreamController.java:149)
at
io.grpc.PartialForwardingClientCallListener.onClose(PartialForwardingClientCallListener.java:39)
at
io.grpc.ForwardingClientCallListener.onClose(ForwardingClientCallListener.java:23)
at
io.grpc.ForwardingClientCallListener$SimpleForwardingClientCallListener.onClose(ForwardingClientCallListener.java:40)
at
com.google.ads.googleads.lib.logging.LoggingInterceptor$1$1.onClose(LoggingInterceptor.java:111)
at
io.grpc.PartialForwardingClientCallListener.onClose(PartialForwardingClientCallListener.java:39)
at
io.grpc.ForwardingClientCallListener.onClose(ForwardingClientCallListener.java:23)
at
io.grpc.ForwardingClientCallListener$SimpleForwardingClientCallListener.onClose(ForwardingClientCallListener.java:40)
at
io.grpc.internal.CensusStatsModule$StatsClientInterceptor$1$1.onClose(CensusStatsModule.java:700)
at
io.grpc.PartialForwardingClientCallListener.onClose(PartialForwardingClientCallListener.java:39)
at
io.grpc.ForwardingClientCallListener.onClose(ForwardingClientCallListener.java:23)
at
io.grpc.ForwardingClientCallListener$SimpleForwardingClientCallListener.onClose(ForwardingClientCallListener.java:40)
at
io.grpc.internal.CensusTracingModule$TracingClientInterceptor$1$1.onClose(CensusTracingModule.java:399)
at io.grpc.internal.ClientCallImpl.closeObserver(ClientCallImpl.java:510)
at io.grpc.internal.ClientCallImpl.access$300(ClientCallImpl.java:66)
at
io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl.close(ClientCallImpl.java:630)
at
io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl.access$700(ClientCallImpl.java:518)
at
io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl$1StreamClosed.runInternal(ClientCallImpl.java:692)
at
io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl$1StreamClosed.runInContext(ClientCallImpl.java:681)
at io.grpc.internal.ContextRunnable.run(ContextRunnable.java:37)
at io.grpc.internal.SerializingExecutor.run(SerializingExecutor.java:123)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run$$$capture(FutureTask.java:266)
at java.util.concurrent.FutureTask.run(FutureTask.java)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Suppressed: java.lang.RuntimeException: Asynchronous task failed
at
com.google.api.gax.rpc.ServerStreamIterator.hasNext(ServerStreamIterator.java:105)
at
com.google.ads.googleads.examples.basicoperations.GetCampaigns.runExample(GetCampaigns.java:103)
at
com.google.ads.googleads.examples.basicoperations.GetCampaigns.main(GetCampaigns.java:64)
Caused by: io.grpc.StatusRuntimeException: UNAVAILABLE: Credentials failed
to obtain metadata
at io.grpc.Status.asRuntimeException(Status.java:533)
... 29 more
Caused by: com.google.api.client.http.HttpResponseException: 400 Bad Request
{
"error": "invalid_grant",
"error_description": "Bad Request"
}
at com.google.api.client.http.HttpRequest.execute(HttpRequest.java:1097)
at
com.google.auth.oauth2.UserCredentials.refreshAccessToken(UserCredentials.java:197)
at
com.google.auth.oauth2.OAuth2Credentials.refresh(OAuth2Credentials.java:157)
at
com.google.auth.oauth2.OAuth2Credentials.getRequestMetadata(OAuth2Credentials.java:145)
at com.google.auth.Credentials.blockingGetToCallback(Credentials.java:112)
at com.google.auth.Credentials$1.run(Credentials.java:98)
... 8 more
Disconnected from the target VM, address:
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