Please help me fix the below issue.
<iq type="set" id="14-19457" to="******@domain.com/resource">
<query xmlns="jabber:iq:roster">
<item jid="******@domain" subscription="remove"/>
</query>
</iq>
java.lang.NullPointerException
at org.jivesoftware.openfire.IQRouter.sendErrorPacket(IQRouter.java:428)
| at org.jivesoftware.openfire.IQRouter.routingFailed(IQRouter.java:464) | |
| at org.jivesoftware.openfire.spi.RoutingTableImpl.routePacket(RoutingTableImpl.jav a:254) | |
| at org.jivesoftware.openfire.net.SocketPacketWriteHandler.process(SocketPacketWrit eHandler.java:68) | |
| at org.jivesoftware.openfire.spi.PacketDelivererImpl.deliver(PacketDelivererImpl.j ava:56) | |
| at org.jivesoftware.openfire.nio.NIOConnection.deliver(NIOConnection.java:278) | |
| at org.jivesoftware.openfire.session.LocalClientSession.deliver(LocalClientSession .java:856) | |
| at org.jivesoftware.openfire.session.LocalSession.process(LocalSession.java:282) | |
| at org.jivesoftware.openfire.spi.RoutingTableImpl.routeToLocalDomain(RoutingTableI mpl.java:344) | |
| at org.jivesoftware.openfire.spi.RoutingTableImpl.routePacket(RoutingTableImpl.jav a:238) | |
| at org.jivesoftware.openfire.SessionManager.userBroadcast(SessionManager.java:1051 ) | |
| at org.jivesoftware.openfire.roster.Roster.broadcast(Roster.java:685) | |
| at org.jivesoftware.openfire.roster.Roster.deleteRosterItem(Roster.java:486) | |
| at org.jivesoftware.openfire.roster.RosterManager.deleteRoster(RosterManager.java: 142) | |
| at org.jivesoftware.openfire.roster.RosterManager.userDeleting(RosterManager.java: 591) | |
| at org.jivesoftware.openfire.event.UserEventDispatcher.dispatchEvent(UserEventDisp atcher.java:138) | |
| at org.jivesoftware.openfire.user.UserManager.deleteUser(UserManager.java:224) | |
| at org.jivesoftware.openfire.handler.IQRegisterHandler.handleIQ(IQRegisterHandler. java:249) | |
| at org.jivesoftware.openfire.handler.IQHandler.process(IQHandler.java:65) | |
| at org.jivesoftware.openfire.IQRouter.handle(IQRouter.java:377) | |
| at org.jivesoftware.openfire.IQRouter.route(IQRouter.java:124) | |
| at org.jivesoftware.openfire.spi.PacketRouterImpl.route(PacketRouterImpl.java:76) | |
| at org.jivesoftware.openfire.net.StanzaHandler.processIQ(StanzaHandler.java:330) | |
| at org.jivesoftware.openfire.net.ClientStanzaHandler.processIQ(ClientStanzaHandler .java:93) |