Java DSL throws exception when using typed.javadsl.EventSourcedBehavior#lastSequenceNumber

[aludwiko]

When handling the first event in the event handler:

java.lang.IllegalStateException: Cannot extract the lastSequenceNumber in state akka.actor.typed.internal.BehaviorImpl$DeferredBehavior$$anon$1
	at akka.persistence.typed.scaladsl.EventSourcedBehavior$.lastSequenceNumber(EventSourcedBehavior.scala:115)
	at akka.persistence.typed.javadsl.EventSourcedBehavior.lastSequenceNumber(EventSourcedBehavior.scala:263)
	at perf.test.iot.DeviceEntity.eventHandler(DeviceEntity.java:82)
	at akka.persistence.typed.javadsl.EventSourcedBehavior.createEventSourcedBehavior(EventSourcedBehavior.scala:224)
	at akka.persistence.typed.javadsl.EventSourcedBehavior.apply(EventSourcedBehavior.scala:207)

I think that pattern matching should also cover Deferred wrapper:

[johanandren]

When handling the first event in the event handler

On replay, or after handling a command?

[johanandren]

For the record, Deferred means the behavior was not created yet, it just contains a factory context => behavior, so there is no way to look "inside" it.

Can you share exactly what the event handler method looks like?