Searched on Google with the first line of a JAVA stack trace?

We can recommend more relevant solutions and speed up debugging when you paste your entire stack trace with the exception message. Try a sample exception.

Recommended solutions based on your search

Solutions on the web

java.lang.NullPointerException: 	at io.reactivex.observers.SerializedObserver.onNext(SerializedObserver.java:91)	at io.reactivex.internal.operators.observable.ObservableWithLatestFrom$WithLatestFromObserver.onNext(ObservableWithLatestFrom.java:101)	at io.reactivex.internal.operators.observable.ObservableFilter$FilterObserver.onNext(ObservableFilter.java:51)	at io.reactivex.internal.operators.observable.ObservableMap$MapObserver.onNext(ObservableMap.java:63)	at io.reactivex.subjects.PublishSubject$PublishDisposable.onNext(PublishSubject.java:263)	at io.reactivex.subjects.PublishSubject.onNext(PublishSubject.java:182)