{"action":"created","issue":{"url":"https://api.github.com/repos/akka/akka/issues/19338","labels_url":"https://api.github.com/repos/akka/akka/issues/19338/labels{/name}","comments_url":"https://api.github.com/repos/akka/akka/issues/19338/comments","events_url":"https://api.github.com/repos/akka/akka/issues/19338/events","html_url":"https://github.com/akka/akka/issues/19338","id":124702505,"number":19338,"title":"NPE from ActorGraphInterpreter","user":{"login":"jroper","id":105833,"avatar_url":"https://avatars.githubusercontent.com/u/105833?v=3","gravatar_id":"","url":"https://api.github.com/users/jroper","html_url":"https://github.com/jroper","followers_url":"https://api.github.com/users/jroper/followers","following_url":"https://api.github.com/users/jroper/following{/other_user}","gists_url":"https://api.github.com/users/jroper/gists{/gist_id}","starred_url":"https://api.github.com/users/jroper/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/jroper/subscriptions","organizations_url":"https://api.github.com/users/jroper/orgs","repos_url":"https://api.github.com/users/jroper/repos","events_url":"https://api.github.com/users/jroper/events{/privacy}","received_events_url":"https://api.github.com/users/jroper/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/akka/akka/labels/bug","name":"bug","color":"e11d21"},{"url":"https://api.github.com/repos/akka/akka/labels/t:stream","name":"t:stream","color":"cccccc"}],"state":"closed","locked":false,"assignee":{"login":"drewhk","id":932285,"avatar_url":"https://avatars.githubusercontent.com/u/932285?v=3","gravatar_id":"","url":"https://api.github.com/users/drewhk","html_url":"https://github.com/drewhk","followers_url":"https://api.github.com/users/drewhk/followers","following_url":"https://api.github.com/users/drewhk/following{/other_user}","gists_url":"https://api.github.com/users/drewhk/gists{/gist_id}","starred_url":"https://api.github.com/users/drewhk/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/drewhk/subscriptions","organizations_url":"https://api.github.com/users/drewhk/orgs","repos_url":"https://api.github.com/users/drewhk/repos","events_url":"https://api.github.com/users/drewhk/events{/privacy}","received_events_url":"https://api.github.com/users/drewhk/received_events","type":"User","site_admin":false},"milestone":{"url":"https://api.github.com/repos/akka/akka/milestones/76","html_url":"https://github.com/akka/akka/milestones/stream-http-2.0.2","labels_url":"https://api.github.com/repos/akka/akka/milestones/76/labels","id":1506847,"number":76,"title":"stream-http-2.0.2","description":"","creator":{"login":"ktoso","id":120979,"avatar_url":"https://avatars.githubusercontent.com/u/120979?v=3","gravatar_id":"","url":"https://api.github.com/users/ktoso","html_url":"https://github.com/ktoso","followers_url":"https://api.github.com/users/ktoso/followers","following_url":"https://api.github.com/users/ktoso/following{/other_user}","gists_url":"https://api.github.com/users/ktoso/gists{/gist_id}","starred_url":"https://api.github.com/users/ktoso/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ktoso/subscriptions","organizations_url":"https://api.github.com/users/ktoso/orgs","repos_url":"https://api.github.com/users/ktoso/repos","events_url":"https://api.github.com/users/ktoso/events{/privacy}","received_events_url":"https://api.github.com/users/ktoso/received_events","type":"User","site_admin":false},"open_issues":0,"closed_issues":9,"state":"closed","created_at":"2016-01-14T12:56:49Z","updated_at":"2016-01-14T19:16:27Z","due_on":"2016-01-14T23:00:00Z","closed_at":"2016-01-14T19:16:27Z"},"comments":8,"created_at":"2016-01-04T06:14:30Z","updated_at":"2016-01-14T23:20:43Z","closed_at":"2016-01-14T07:09:45Z","body":"This is probably the fault of my code, but the exception doesn't leave me any wiser as to what the problem could be:\r\n\r\n```\r\njava.lang.NullPointerException: null\r\n\tat akka.stream.impl.fusing.ActorGraphInterpreter$ActorOutputBoundary.subscribePending(ActorGraphInterpreter.scala:262) ~[akka-stream-experimental_2.11-2.0.1.jar:na]\r\n\tat akka.stream.impl.fusing.GraphInterpreterShell.receive(ActorGraphInterpreter.scala:421) ~[akka-stream-experimental_2.11-2.0.1.jar:na]\r\n\tat akka.stream.impl.fusing.ActorGraphInterpreter$$anonfun$receive$1.applyOrElse(ActorGraphInterpreter.scala:547) ~[akka-stream-experimental_2.11-2.0.1.jar:na]\r\n\tat akka.actor.Actor$class.aroundReceive(Actor.scala:480) ~[akka-actor_2.11-2.4.1.jar:na]\r\n\tat akka.stream.impl.fusing.ActorGraphInterpreter.aroundReceive(ActorGraphInterpreter.scala:495) ~[akka-stream-experimental_2.11-2.0.1.jar:na]\r\n\tat akka.actor.ActorCell.receiveMessage(ActorCell.scala:526) [akka-actor_2.11-2.4.1.jar:na]\r\n\tat akka.actor.ActorCell.invoke(ActorCell.scala:495) [akka-actor_2.11-2.4.1.jar:na]\r\n\tat akka.dispatch.Mailbox.processMailbox(Mailbox.scala:257) [akka-actor_2.11-2.4.1.jar:na]\r\n\tat akka.dispatch.Mailbox.run(Mailbox.scala:224) [akka-actor_2.11-2.4.1.jar:na]\r\n\tat akka.dispatch.Mailbox.exec(Mailbox.scala:234) [akka-actor_2.11-2.4.1.jar:na]\r\n```"},"comment":{"url":"https://api.github.com/repos/akka/akka/issues/comments/171814407","html_url":"https://github.com/akka/akka/issues/19338#issuecomment-171814407","issue_url":"https://api.github.com/repos/akka/akka/issues/19338","id":171814407,"user":{"login":"jroper","id":105833,"avatar_url":"https://avatars.githubusercontent.com/u/105833?v=3","gravatar_id":"","url":"https://api.github.com/users/jroper","html_url":"https://github.com/jroper","followers_url":"https://api.github.com/users/jroper/followers","following_url":"https://api.github.com/users/jroper/following{/other_user}","gists_url":"https://api.github.com/users/jroper/gists{/gist_id}","starred_url":"https://api.github.com/users/jroper/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/jroper/subscriptions","organizations_url":"https://api.github.com/users/jroper/orgs","repos_url":"https://api.github.com/users/jroper/repos","events_url":"https://api.github.com/users/jroper/events{/privacy}","received_events_url":"https://api.github.com/users/jroper/received_events","type":"User","site_admin":false},"created_at":"2016-01-14T23:20:43Z","updated_at":"2016-01-14T23:20:43Z","body":"The NPE appears to be fixed, thanks!\r\n\r\nInterestingly, some tests that weren't failing before now seem to be failing consistently.  I'll have to look into this a little deeper to work out what's going on."}}