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java.lang.NullPointerException: 	at org.artifactory.webapp.wicket.page.config.services.cron.CronNextDatePanel.formatDate(CronNextDatePanel.java:92)	at org.artifactory.webapp.wicket.page.config.services.cron.CronNextDatePanel.getNextRunTime(CronNextDatePanel.java:85)	at org.artifactory.webapp.wicket.page.config.services.cron.CronNextDatePanel.access$000(CronNextDatePanel.java:39)	at org.artifactory.webapp.wicket.page.config.services.cron.CronNextDatePanel$2.onUpdate(CronNextDatePanel.java:61)	at org.apache.wicket.ajax.form.AjaxFormComponentUpdatingBehavior.onEvent(AjaxFormComponentUpdatingBehavior.java:145)	at org.apache.wicket.ajax.AjaxEventBehavior.respond(AjaxEventBehavior.java:177)	at org.apache.wicket.ajax.AbstractDefaultAjaxBehavior.onRequest(AbstractDefaultAjaxBehavior.java:286)	at org.apache.wicket.request.target.component.listener.BehaviorRequestTarget.processEvents(BehaviorRequestTarget.java:119)	at org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(AbstractRequestCycleProcessor.java:92)	at org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1250)	at org.apache.wicket.RequestCycle.step(RequestCycle.java:1329)	at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1428)	at org.apache.wicket.RequestCycle.request(RequestCycle.java:545)	at org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:479)	at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:312)	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1190)	at org.artifactory.webapp.servlet.RepoFilter.execute(RepoFilter.java:140)	at org.artifactory.webapp.servlet.RepoFilter.doFilter(RepoFilter.java:83)	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1190)	at org.artifactory.webapp.servlet.AccessFilter.useAuthentication(AccessFilter.java:245)	at org.artifactory.webapp.servlet.AccessFilter.doFilterInternal(AccessFilter.java:154)	at org.artifactory.webapp.servlet.AccessFilter.doFilter(AccessFilter.java:116)	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1190)	at org.artifactory.webapp.servlet.RequestFilter.doFilter(RequestFilter.java:54)	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1190)	at org.artifactory.webapp.servlet.ArtifactoryFilter.doFilter(ArtifactoryFilter.java:66)	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1190)	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:424)	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:494)	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:229)	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:931)	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:361)	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:186)	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:867)	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)	at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:245)	at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:126)	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:113)	at org.eclipse.jetty.server.Server.handle(Server.java:337)	at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:581)	at org.eclipse.jetty.server.HttpConnection$RequestHandler.content(HttpConnection.java:1020)	at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:775)	at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:228)	at org.eclipse.jetty.server.HttpConnection.handle(HttpConnection.java:417)	at org.eclipse.jetty.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:474)	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)	at java.lang.Thread.run(Thread.java:680)