[ERROR] [04/13/2021 20:11:18.816] [swarm-plugin-akka.actor.default-dispatcher-8] [akka://swarm-plugin/user/reset-stuck-builds-actor] null
java.lang.NullPointerException
        at org.jenkinsci.plugins.docker.swarm.ResetStuckBuildsInQueueActor.resetStuckBuildsInQueue(ResetStuckBuildsInQueueActor.java:36)
        at org.jenkinsci.plugins.docker.swarm.ResetStuckBuildsInQueueActor.lambda$createReceive$0(ResetStuckBuildsInQueueActor.java:27)
        at akka.japi.pf.UnitCaseStatement.apply(CaseStatements.scala:24)
        at akka.japi.pf.UnitCaseStatement.apply(CaseStatements.scala:20)
        at scala.PartialFunction.applyOrElse(PartialFunction.scala:127)
        at scala.PartialFunction.applyOrElse$(PartialFunction.scala:126)
        at akka.japi.pf.UnitCaseStatement.applyOrElse(CaseStatements.scala:20)
        at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:175)
        at akka.actor.Actor.aroundReceive(Actor.scala:539)
        at akka.actor.Actor.aroundReceive$(Actor.scala:537)
        at akka.actor.AbstractActor.aroundReceive(AbstractActor.scala:227)
        at akka.actor.ActorCell.receiveMessage(ActorCell.scala:612)
        at akka.actor.ActorCell.invoke(ActorCell.scala:581)
        at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:268)
        at akka.dispatch.Mailbox.run(Mailbox.scala:229)
        at akka.dispatch.Mailbox.exec(Mailbox.scala:241)
        at akka.dispatch.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
        at akka.dispatch.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
        at akka.dispatch.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
        at akka.dispatch.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)