NPE blocked restart of service

[anjackson]

WARNING: org.archive.crawler.restlet.RateLimitGuard authenticate authentication failure POST https://localhost:8443/engine/job/frequent HTTPS/1.1 [Fri Apr 23 08:34:55 GMT 2
021]
SEVERE: org.restlet.resource.ServerResource doCatch Exception or error caught in server resource [Fri Apr 23 08:34:55 GMT 2021]
java.lang.NullPointerException
        at org.archive.crawler.restlet.JobResource.post(JobResource.java:229)
        at org.restlet.resource.ServerResource.doHandle(ServerResource.java:606)
        at org.restlet.resource.ServerResource.doNegotiatedHandle(ServerResource.java:662)
        at org.restlet.resource.ServerResource.doConditionalHandle(ServerResource.java:348)
        at org.restlet.resource.ServerResource.handle(ServerResource.java:1020)
        at org.restlet.resource.Finder.handle(Finder.java:236)
        at org.restlet.routing.Filter.doHandle(Filter.java:150)
        at org.restlet.routing.Filter.handle(Filter.java:197)
        at org.restlet.routing.Router.doHandle(Router.java:422)
        at org.restlet.routing.Router.handle(Router.java:641)
        at org.restlet.routing.Filter.doHandle(Filter.java:150)
        at org.restlet.routing.Filter.handle(Filter.java:197)
        at org.restlet.routing.Filter.doHandle(Filter.java:150)
        at org.restlet.routing.Filter.handle(Filter.java:197)
        at org.restlet.routing.Filter.doHandle(Filter.java:150)
        at org.restlet.engine.application.StatusFilter.doHandle(StatusFilter.java:140)
        at org.restlet.routing.Filter.handle(Filter.java:197)
        at org.restlet.routing.Filter.doHandle(Filter.java:150)
        at org.restlet.routing.Filter.handle(Filter.java:197)
        at org.restlet.engine.CompositeHelper.handle(CompositeHelper.java:202)
        at org.restlet.engine.application.ApplicationHelper.handle(ApplicationHelper.java:77)
        at org.restlet.Application.handle(Application.java:385)
        at org.restlet.routing.Filter.doHandle(Filter.java:150)
        at org.restlet.routing.Filter.handle(Filter.java:197)
        at org.restlet.routing.Filter.doHandle(Filter.java:150)
        at org.restlet.routing.Filter.handle(Filter.java:197)
        at org.restlet.routing.Router.doHandle(Router.java:422)
        at org.restlet.routing.Router.handle(Router.java:641)
        at org.restlet.routing.Filter.doHandle(Filter.java:150)
        at org.restlet.routing.Filter.handle(Filter.java:197)
        at org.restlet.routing.Router.doHandle(Router.java:422)
        at org.restlet.routing.Router.handle(Router.java:641)
        at org.restlet.routing.Filter.doHandle(Filter.java:150)
        at org.restlet.engine.application.StatusFilter.doHandle(StatusFilter.java:140)
        at org.restlet.routing.Filter.handle(Filter.java:197)
        at org.restlet.routing.Filter.doHandle(Filter.java:150)
        at org.restlet.routing.Filter.handle(Filter.java:197)
        at org.restlet.engine.CompositeHelper.handle(CompositeHelper.java:202)
        at org.restlet.Component.handle(Component.java:408)
        at org.restlet.Server.handle(Server.java:507)
        at org.restlet.engine.connector.ServerHelper.handle(ServerHelper.java:63)
        at org.restlet.engine.adapter.HttpServerHelper.handle(HttpServerHelper.java:143)
        at org.restlet.ext.jetty.JettyServerHelper$WrappedServer.handle(JettyServerHelper.java:237)
        at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:370)
        at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:267)
        at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:305)
        at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)
        at org.eclipse.jetty.io.ssl.SslConnection$DecryptedEndPoint.onFillable(SslConnection.java:427)
        at org.eclipse.jetty.io.ssl.SslConnection.onFillable(SslConnection.java:321)
        at org.eclipse.jetty.io.ssl.SslConnection$2.succeeded(SslConnection.java:159)
        at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103)
        at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:117)
        at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:333)
        at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:310)
        at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168)
        at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.produce(EatWhatYouKill.java:132)
        at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:781)
        at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:917)
        at java.lang.Thread.run(Thread.java:748)