Logcat

io.reactivex.exceptions.OnErrorNotImplementedException: length=10; index=-1
	at io.reactivex.internal.functions.Functions$OnErrorMissingConsumer.accept(Functions.java:704)
	at io.reactivex.internal.functions.Functions$OnErrorMissingConsumer.accept(Functions.java:701)
	at io.reactivex.internal.observers.LambdaObserver.onError(LambdaObserver.java:77)
	at io.reactivex.internal.observers.LambdaObserver.onNext(LambdaObserver.java:67)
	at io.reactivex.internal.operators.observable.ObservableObserveOn$ObserveOnObserver.drainNormal(ObservableObserveOn.java:200)
	at io.reactivex.internal.operators.observable.ObservableObserveOn$ObserveOnObserver.run(ObservableObserveOn.java:252)
	at io.reactivex.android.schedulers.HandlerScheduler$ScheduledRunnable.run(HandlerScheduler.java:109)
	at android.os.Handler.handleCallback(Handler.java:790)
	at android.os.Handler.dispatchMessage(Handler.java:99)
	at android.os.Looper.loop(Looper.java:164)
	at android.app.ActivityThread.main(ActivityThread.java:6600)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:518)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:821)
Caused by: java.lang.ArrayIndexOutOfBoundsException: length=10; index=-1
	at java.util.ArrayList.get(ArrayList.java:439)
	at com.memoria.photos.gallery.adapters.MediaAdapter.remove(MediaAdapter.java:209)
	at com.memoria.photos.gallery.fragments.FavsFragment.lambda$onCreateView$4$FavsFragment(FavsFragment.java:206)
	at com.memoria.photos.gallery.fragments.FavsFragment$$Lambda$6.accept(Unknown Source:4)
	at io.reactivex.internal.observers.LambdaObserver.onNext(LambdaObserver.java:63)
	... 10 more