Bad RequestBypassToServer:
java.lang.NullPointerException
        at net.sf.l2j.gameserver.model.actor.stat.NpcStat.<init>(NpcStat.java:17
)
        at net.sf.l2j.gameserver.model.actor.instance.L2NpcInstance.getStat(L2Np
cInstance.java:225)
        at net.sf.l2j.gameserver.model.actor.instance.L2NpcInstance.<init>(L2Npc
Instance.java:197)
        at net.sf.l2j.gameserver.model.actor.instance.L2ArtefactInstance.<init>(
L2ArtefactInstance.java:49)
        at net.sf.l2j.gameserver.model.entity.Siege.spawnArtifact(Siege.java:118
2)
        at net.sf.l2j.gameserver.model.entity.Siege.startSiege(Siege.java:428)
        at net.sf.l2j.gameserver.handler.admincommandhandlers.AdminSiege.useAdmi
nCommand(AdminSiege.java:207)
        at net.sf.l2j.gameserver.clientpackets.RequestBypassToServer.runImpl(Req
uestBypassToServer.java:78)
        at net.sf.l2j.gameserver.clientpackets.L2GameClientPacket.run(L2GameClie
ntPacket.java:71)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source
)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)