2016-05-04 13:14:12,906 ERROR ExceptionMessageHandler:29 - java.lang.NullPointerException
org.apache.mina.filter.codec.ProtocolEncoderException: java.lang.NullPointerException
        at org.apache.mina.filter.codec.ProtocolCodecFilter.filterWrite(ProtocolCodecFilter.java:355)
        at org.apache.mina.core.filterchain.DefaultIoFilterChain.callPreviousFilterWrite(DefaultIoFilterChain.java:509)
        at org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1400(DefaultIoFilterChain.java:46)
        at org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.filterWrite(DefaultIoFilterChain.java:808)
        at org.apache.mina.core.filterchain.DefaultIoFilterChain$TailFilter.filterWrite(DefaultIoFilterChain.java:734)
        at org.apache.mina.core.filterchain.DefaultIoFilterChain.callPreviousFilterWrite(DefaultIoFilterChain.java:509)
        at org.apache.mina.core.filterchain.DefaultIoFilterChain.fireFilterWrite(DefaultIoFilterChain.java:501)
        at org.apache.mina.core.session.AbstractIoSession.write(AbstractIoSession.java:490)
        at org.apache.mina.core.session.AbstractIoSession.write(AbstractIoSession.java:435)
        at com.darknessproject.socketserver.game.Room.broadcastLoadedMapUsers(Room.java:271)
        at com.darknessproject.socketserver.game.Room.broadcastRespawnMessage(Room.java:298)
        at com.darknessproject.socketserver.game.Room.respawn(Room.java:94)
        at com.darknessproject.socketserver.game.Contest.respawn(Contest.java:63)
        at com.darknessproject.socketserver.handler.RespawnMessageHandlerBase.handleMessageProgress(RespawnMessageHandlerBase.java:23)
        at com.darknessproject.socketserver.handler.RespawnMessageHandlerBase.handleMessageProgress(RespawnMessageHandlerBase.java:11)
        at com.darknessproject.socketserver.handler.TimeLoggerMessageHandler.handleMessage(TimeLoggerMessageHandler.java:26)
        at com.darknessproject.socketserver.handler.TimeLoggerMessageHandler.handleMessage(TimeLoggerMessageHandler.java:15)
        at org.apache.mina.handler.demux.DemuxingIoHandler.messageReceived(DemuxingIoHandler.java:232)
        at org.apache.mina.core.filterchain.DefaultIoFilterChain$TailFilter.messageReceived(DefaultIoFilterChain.java:716)
        at org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:434)
        at org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1200(DefaultIoFilterChain.java:46)
        at org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageReceived(DefaultIoFilterChain.java:796)
        at org.apache.mina.filter.codec.ProtocolCodecFilter$ProtocolDecoderOutputImpl.flush(ProtocolCodecFilter.java:427)
        at org.apache.mina.filter.codec.ProtocolCodecFilter.messageReceived(ProtocolCodecFilter.java:245)
        at org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:434)
        at org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1200(DefaultIoFilterChain.java:46)
        at org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageReceived(DefaultIoFilterChain.java:796)
        at org.apache.mina.core.filterchain.IoFilterEvent.fire(IoFilterEvent.java:75)
        at org.apache.mina.core.session.IoEvent.run(IoEvent.java:63)
        at org.apache.mina.filter.executor.OrderedThreadPoolExecutor$Worker.runTask(OrderedThreadPoolExecutor.java:780)