title: Firebase notification Service not registered when sending message
body: <p>I get these errors and app crashes when i send message to my device through firebase cloud messaging.</p>
  <pre><code>W/ConnectionTracker: Exception thrown while unbinding
      java.lang.IllegalArgumentException: Service not registered: com.google.android.gms.measurement.internal.zzji@e44a084
          at android.app.LoadedApk.forgetServiceDispatcher(LoadedApk.java:1331)
          at android.app.ContextImpl.unbindService(ContextImpl.java:1495)
          at android.content.ContextWrapper.unbindService(ContextWrapper.java:648)
          at com.google.android.gms.common.stats.ConnectionTracker.zza(com.google.android.gms:play-services-basement@@17.3.0:55)
          at com.google.android.gms.common.stats.ConnectionTracker.unbindService(com.google.android.gms:play-services-basement@@17.3.0:50)
          at com.google.android.gms.measurement.internal.zzio.zzag(com.google.android.gms:play-services-measurement-impl@@17.6.0:245)
          at com.google.android.gms.measurement.internal.zzio.zzal(com.google.android.gms:play-services-measurement-impl@@17.6.0:262)
          at com.google.android.gms.measurement.internal.zzio.zzc(com.google.android.gms:play-services-measurement-impl@@17.6.0:336)
          at com.google.android.gms.measurement.internal.zzir.zza(com.google.android.gms:play-services-measurement-impl@@17.6.0:2)
          at com.google.android.gms.measurement.internal.zzai.run(com.google.android.gms:play-services-measurement-impl@@17.6.0:7)
          at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:428)
          at java.util.concurrent.FutureTask.run(FutureTask.java:237)
          at com.google.android.gms.measurement.internal.zzfs.run(com.google.android.gms:play-services-measurement-impl@@17.6.0:21)
  </code></pre>
  <p>I followed the instructions step by step from this page <a href="https://firebase.google.com/docs/cloud-messaging/android/receive" rel="nofollow noreferrer">https://firebase.google.com/docs/cloud-messaging/android/receive</a></p>