Error on network read, player disconnected? (nullpointer, couldn't get player name)

java.lang.NoSuchFieldError: race
        at net.sf.l2j.gameserver.serverpackets.CharTemplates.writeImpl(CharTemplates.java:55)
        at net.sf.l2j.gameserver.serverpackets.ServerBasePacket.write(ServerBasePacket.java:127)
        at net.sf.l2j.gameserver.SelectorThread.pack(SelectorThread.java:503)
        at net.sf.l2j.gameserver.SelectorThread.processOutboudQueue(SelectorThread.java:603)
        at net.sf.l2j.gameserver.SelectorThread.run(SelectorThread.java:233)

SIGTERM received. Shutting down NOW!