pubsub error

gistfile1.txt

2016-12-10T22:22:57.812607735Z 	at com.google.cloud.pubsub.PubSubImpl.<init>(PubSubImpl.java:115)
2016-12-10T22:22:57.812760248Z 	at com.google.cloud.pubsub.PubSubOptions$DefaultPubSubFactory.create(PubSubOptions.java:44)
2016-12-10T22:22:57.812885120Z 	at com.google.cloud.pubsub.PubSubOptions$DefaultPubSubFactory.create(PubSubOptions.java:39)
2016-12-10T22:22:57.813012205Z 	at com.google.cloud.ServiceOptions.getService(ServiceOptions.java:465)
2016-12-10T22:22:57.813201225Z 	at com.example.myproject.ingestor.ValidatorRoute$.<init>(ValidatorRoute.scala:14)
2016-12-10T22:22:57.813363940Z 	at com.example.myproject.ingestor.ValidatorRoute$.<clinit>(ValidatorRoute.scala)
2016-12-10T22:22:57.813526666Z 	... 11 more
2016-12-10T22:22:57.813766966Z Caused by: java.io.IOException: java.lang.IllegalStateException: No NameResolverProviders found via ServiceLoader, including for DNS. This is probably due to a broken build. If using ProGuard, check your configuration
2016-12-10T22:22:57.813873152Z 	at com.google.cloud.pubsub.spi.DefaultPubSubRpc.<init>(DefaultPubSubRpc.java:177)
2016-12-10T22:22:57.813978832Z 	at com.google.cloud.pubsub.PubSubOptions$DefaultPubSubRpcFactory.create(PubSubOptions.java:69)
2016-12-10T22:22:57.814063813Z 	... 19 more
2016-12-10T22:22:57.814310323Z Caused by: java.lang.IllegalStateException: No NameResolverProviders found via ServiceLoader, including for DNS. This is probably due to a broken build. If using ProGuard, check your configuration
2016-12-10T22:22:57.814441380Z 	at com.google.common.base.Preconditions.checkState(Preconditions.java:174)
2016-12-10T22:22:57.814603126Z 	at io.grpc.NameResolverProvider$NameResolverFactory.checkForProviders(NameResolverProvider.java:200)
2016-12-10T22:22:57.814667910Z 	at io.grpc.NameResolverProvider$NameResolverFactory.newNameResolver(NameResolverProvider.java:183)
2016-12-10T22:22:57.814732514Z 	at io.grpc.internal.ManagedChannelImpl.getNameResolver(ManagedChannelImpl.java:371)
2016-12-10T22:22:57.814776853Z 	at io.grpc.internal.ManagedChannelImpl.<init>(ManagedChannelImpl.java:316)
2016-12-10T22:22:57.814851314Z 	at io.grpc.internal.AbstractManagedChannelImplBuilder.build(AbstractManagedChannelImplBuilder.java:260)
2016-12-10T22:22:57.814920222Z 	at com.google.api.gax.grpc.InstantiatingChannelProvider.createChannel(InstantiatingChannelProvider.java:119)
2016-12-10T22:22:57.814987164Z 	at com.google.api.gax.grpc.InstantiatingChannelProvider.getChannel(InstantiatingChannelProvider.java:106)
2016-12-10T22:22:57.815069148Z 	at com.google.api.gax.grpc.ProviderManager.getChannel(ProviderManager.java:106)
2016-12-10T22:22:57.815168963Z 	at com.google.api.gax.grpc.ChannelAndExecutor.create(ChannelAndExecutor.java:67)
2016-12-10T22:22:57.815244864Z 	at com.google.api.gax.grpc.ClientSettings.getChannelAndExecutor(ClientSettings.java:78)
2016-12-10T22:22:57.815310804Z 	at com.google.cloud.pubsub.spi.v1.PublisherClient.<init>(PublisherClient.java:182)
2016-12-10T22:22:57.815376895Z 	at com.google.cloud.pubsub.spi.v1.PublisherClient.create(PublisherClient.java:173)
2016-12-10T22:22:57.815448198Z 	at com.google.cloud.pubsub.spi.DefaultPubSubRpc.<init>(DefaultPubSubRpc.java:168)
2016-12-10T22:22:57.815509527Z 	... 20 more