title: Google speech to Text api in android status code UNIMPLEMENTED error
body: <p>I have been using google speech to text api in my project for more then 2 years ,it was working fine but suddenly i have started getting below error as soon as i start it.</p>
  
  <p>Error to Recognize.
  io.grpc.StatusRuntimeException: UNIMPLEMENTED: GRPC target method can't be resolved.
  at io.grpc.Status.asRuntimeException(Unknown Source)
  at io.grpc.stub.ClientCalls$StreamObserverToCallListenerAdapter.onClose(Unknown Source)
  at io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl.close(Unknown Source)
  at io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl.access$500(Unknown Source)
  at io.grpc.internal.ClientCallImpl$ClientStreamListenerImpl$3.runInContext(Unknown Source)
  at io.grpc.internal.ContextRunnable.run(Unknown Source)
  at io.grpc.internal.SerializingExecutor$TaskRunner.run(Unknown Source)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
  at java.lang.Thread.run(Thread.java:761)</p>
  
  <p>i am using same api in both android and ios but its not working only in android and its working in ios.
  It is very critical for me to resolve this error as soon as possible , any help will be highly appreciated.</p>