java.lang.IllegalStateException

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    • java.lang.IllegalStateException: Exception thrown on Scheduler.Worker thread. Add `onError` handling. at rx.android.schedulers.LooperScheduler$ScheduledAction.run(LooperScheduler.java:112) at android.os.Handler.handleCallback(Handler.java:739) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:148) at android.app.ActivityThread.main(ActivityThread.java:5438) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:739) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:629) Caused by: rx.exceptions.OnErrorNotImplementedException: Attempt to invoke interface method 'int java.util.List.size()' on a null object reference at rx.internal.util.InternalObservableUtils$ErrorNotImplementedAction.call(InternalObservableUtils.java:386) at rx.internal.util.InternalObservableUtils$ErrorNotImplementedAction.call(InternalObservableUtils.java:383) at rx.internal.util.ActionSubscriber.onError(ActionSubscriber.java:44) at rx.observers.SafeSubscriber._onError(SafeSubscriber.java:157) at rx.observers.SafeSubscriber.onError(SafeSubscriber.java:120) at rx.exceptions.Exceptions.throwOrReport(Exceptions.java:204) at rx.observers.SafeSubscriber.onNext(SafeSubscriber.java:144) at rx.internal.operators.OperatorFilter$FilterSubscriber.onNext(OperatorFilter.java:73) at rx.internal.operators.OnSubscribeCombineLatest$LatestCoordinator.drain(OnSubscribeCombineLatest.java:286) at rx.internal.operators.OnSubscribeCombineLatest$LatestCoordinator.combine(OnSubscribeCombineLatest.java:228) at rx.internal.operators.OnSubscribeCombineLatest$CombinerSubscriber.onNext(OnSubscribeCombineLatest.java:383) at rx.observers.SafeSubscriber.onNext(SafeSubscriber.java:139) at rx.internal.operators.OperatorFilter$FilterSubscriber.onNext(OperatorFilter.java:73) at rx.internal.operators.OperatorMaterialize$ParentSubscriber.onNext(OperatorMaterialize.java:113) at rx.internal.operators.OperatorObserveOn$ObserveOnSubscriber.call(OperatorObserveOn.java:227) at rx.android.schedulers.LooperScheduler$ScheduledAction.run(LooperScheduler.java:107)

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