java.lang.NullPointerException

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    • java.lang.NullPointerException: Attempt to invoke virtual method 'io.grpc.l io.grpc.l.a()' on a null object reference at io.grpc.helloworldexample.b.a(Unknown Source) at io.grpc.helloworldexample.b.onPostExecute(Unknown Source) at android.os.AsyncTask.finish(AsyncTask.java:651)
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