[Beta3] NPE BleManager$BleManagerGattCallback.nextRequest(boolean)' on a null object reference about android-ble-library HOT 12 CLOSED

public void connect() throws FailureReason {
    bleManager.setGattCallbacks(this);

    try {
      bleManager.connect(bluetoothDevice).await();
    } catch (InvalidRequestException
        | RequestFailedException
        | DeviceDisconnectedException
        | BluetoothDisabledException e) {
      throw new FailureReason(e);
    }
  }

Completable.create(
              emitter -> {
                try {
                  deviceDriver.connect();

                  if (!emitter.isDisposed()) {
                    emitter.onComplete();
                  }
                } catch (Exception e) {
                  emitter.tryOnError(e);
                }
              })
          .subscribeOn(Schedulers.io())
          .retryWhen(new RetryWithDelay(3, 600))

16:13:14.735 W/System.err: com.mycompany.sdk.error.FailureReason: Critical error : Request failed with status -5
16:13:14.736 W/System.err:     at com.mycompany.sdk.core.driver.ble.MyBleDriver.connect(MyBleDriver.java:127)
16:13:14.736 W/System.err:     at com.mycompany.sdk.core.driver.ble.ModelDriver.connect(ModelDriver.java:17)
16:13:14.737 W/System.err:     at com.mycompany.sdk.core.KLTBConnectionImpl.lambda$establish$0(ConnectionImpl.java:271)
16:13:14.738 W/System.err:     at com.mycompany.sdk.core.-$$Lambda$ConnectionImpl$M-xyHm1uT6ux5XLimu1x5Qxi-EE.subscribe(Unknown Source:2)
16:13:14.738 W/System.err:     at io.reactivex.internal.operators.completable.CompletableCreate.subscribeActual(CompletableCreate.java:39)
16:13:14.738 24675-24675/com.mycompany.debug D/BluetoothGatt: close()
16:13:14.739 24675-24675/com.mycompany.debug D/BluetoothGatt: unregisterApp() - mClientIf=7
16:13:14.739 W/System.err:     at io.reactivex.Completable.subscribe(Completable.java:2185)
16:13:14.739 W/System.err:     at io.reactivex.internal.operators.completable.CompletableSubscribeOn$SubscribeOnObserver.run(CompletableSubscribeOn.java:64)
16:13:14.739 W/System.err:     at io.reactivex.Scheduler$DisposeTask.run(Scheduler.java:578)
16:13:14.740 W/System.err:     at io.reactivex.internal.schedulers.ScheduledRunnable.run(ScheduledRunnable.java:66)
16:13:14.740 W/System.err:     at io.reactivex.internal.schedulers.ScheduledRunnable.call(ScheduledRunnable.java:57)
16:13:14.741 W/System.err:     at java.util.concurrent.FutureTask.run(FutureTask.java:266)
16:13:14.741 W/System.err:     at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:301)
16:13:14.741 W/System.err:     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
16:13:14.742 W/System.err:     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
16:13:14.742 W/System.err:     at java.lang.Thread.run(Thread.java:764)
16:13:14.744 E/MyBleDriver: onError: a BLE error has occurred message = Error on connection state change, code = 133
16:13:14.745 D/AndroidRuntime: Shutting down VM


    --------- beginning of crash
16:13:14.751 E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.colgate.colgateconnect.debug, PID: 24675
    java.lang.NullPointerException: Attempt to invoke direct method 'void no.nordicsemi.android.ble.BleManager$BleManagerGattCallback.nextRequest(boolean)' on a null object reference
        at no.nordicsemi.android.ble.BleManager$BleManagerGattCallback.access$1300(BleManager.java:1836)
        at no.nordicsemi.android.ble.BleManager.lambda$enqueue$4(BleManager.java:1804)
        at no.nordicsemi.android.ble.-$$Lambda$BleManager$KDSxdgn5nClZRFe_FvyLUfX8mWc.run(Unknown Source:2)
        at android.os.Handler.handleCallback(Handler.java:790)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:164)
        at android.app.ActivityThread.main(ActivityThread.java:6494)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)