Queue Full error

Any idea what this is all about?

2015.08.24 16:16:08 org.jivesoftware.openfire.muc.spi.MultiUserChatServiceImpl - Internal server error

java.lang.IllegalStateException: Queue full

at java.util.AbstractQueue.add(AbstractQueue.java:98)

at org.jivesoftware.openfire.muc.spi.MultiUserChatServiceImpl.logConversation(Mult iUserChatServiceImpl.java:1241)

at org.jivesoftware.openfire.muc.spi.LocalMUCRoom.broadcast(LocalMUCRoom.java:1201 )

at org.jivesoftware.openfire.muc.cluster.BroadcastMessageRequest$1.run(BroadcastMe ssageRequest.java:69)

at org.jivesoftware.openfire.muc.cluster.MUCRoomTask.execute(MUCRoomTask.java:85)

at org.jivesoftware.openfire.muc.cluster.BroadcastMessageRequest.run(BroadcastMess ageRequest.java:67)

at org.jivesoftware.openfire.muc.spi.LocalMUCRoom.broadcast(LocalMUCRoom.java:1168 )

at org.jivesoftware.openfire.muc.spi.LocalMUCRoom.send(LocalMUCRoom.java:1040)

at org.jivesoftware.openfire.muc.spi.LocalMUCRoom.sendPublicMessage(LocalMUCRoom.j ava:1015)

at org.jivesoftware.openfire.muc.spi.LocalMUCUser.process(LocalMUCUser.java:289)

at org.jivesoftware.openfire.muc.spi.LocalMUCUser.process(LocalMUCUser.java:194)

at org.jivesoftware.openfire.muc.spi.MultiUserChatServiceImpl.processPacket(MultiU serChatServiceImpl.java:331)

at org.jivesoftware.openfire.component.InternalComponentManager$RoutableComponents .process(InternalComponentManager.java:591)

at org.jivesoftware.openfire.spi.RoutingTableImpl.routeToComponent(RoutingTableImp l.java:401)

at org.jivesoftware.openfire.spi.RoutingTableImpl.routePacket(RoutingTableImpl.jav a:243)

at org.jivesoftware.openfire.MessageRouter.route(MessageRouter.java:138)

at org.jivesoftware.openfire.spi.PacketRouterImpl.route(PacketRouterImpl.java:80)

at org.jivesoftware.openfire.net.StanzaHandler.processMessage(StanzaHandler.java:3 66)

at org.jivesoftware.openfire.net.ClientStanzaHandler.processMessage(ClientStanzaHa ndler.java:107)

at org.jivesoftware.openfire.net.StanzaHandler.process(StanzaHandler.java:220)

at org.jivesoftware.openfire.net.StanzaHandler.process(StanzaHandler.java:187)

at org.jivesoftware.openfire.nio.ConnectionHandler.messageReceived(ConnectionHandl er.java:177)

at org.apache.mina.core.filterchain.DefaultIoFilterChain$TailFilter.messageReceive d(DefaultIoFilterChain.java:690)

at org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(D efaultIoFilterChain.java:417)

at org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1200(DefaultIoFilt erChain.java:47)

at org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageReceiv ed(DefaultIoFilterChain.java:765)

at org.apache.mina.core.filterchain.IoFilterAdapter.messageReceived(IoFilterAdapte r.java:109)

at org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(D efaultIoFilterChain.java:417)

at org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1200(DefaultIoFilt erChain.java:47)

at org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageReceiv ed(DefaultIoFilterChain.java:765)

at org.apache.mina.filter.codec.ProtocolCodecFilter$ProtocolDecoderOutputImpl.flus h(ProtocolCodecFilter.java:407)

at org.apache.mina.filter.codec.ProtocolCodecFilter.messageReceived(ProtocolCodecF ilter.java:236)

at org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(D efaultIoFilterChain.java:417)

at org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1200(DefaultIoFilt erChain.java:47)

at org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageReceiv ed(DefaultIoFilterChain.java:765)

at org.apache.mina.filter.ssl.SslHandler.flushScheduledEvents(SslHandler.java:322)

at org.apache.mina.filter.ssl.SslFilter.messageReceived(SslFilter.java:497)

at org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(D efaultIoFilterChain.java:417)

at org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1200(DefaultIoFilt erChain.java:47)

at org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageReceiv ed(DefaultIoFilterChain.java:765)

at org.apache.mina.core.filterchain.IoFilterEvent.fire(IoFilterEvent.java:74)

at org.apache.mina.core.session.IoEvent.run(IoEvent.java:63)

at org.apache.mina.filter.executor.OrderedThreadPoolExecutor$Worker.runTask(Ordere dThreadPoolExecutor.java:769)

at org.apache.mina.filter.executor.OrderedThreadPoolExecutor$Worker.runTasks(Order edThreadPoolExecutor.java:761)

at org.apache.mina.filter.executor.OrderedThreadPoolExecutor$Worker.run(OrderedThr eadPoolExecutor.java:703)

at java.lang.Thread.run(Thread.java:745)