[Help]Error in start

[DLDL]

Hi Guys some times i have this error in game console [l2-ro team files ]



7:01:02] ERROR Client: IN_GAME IP: 37.127.17.116 Account: mahdy Player : Copper[268489078] - Failed running: [C] Appearing - Server Version: -1
va.lang.NullPointerException
at l2ro.gameserver.model.instances.residences.SiegeFlagInstance.getName(SiegeFlagInstance.java:32)
at l2ro.gameserver.network.serverpackets.NpcInfo.<init>(NpcInfo.java:39)
at l2ro.gameserver.model.instances.NpcInstance.addPacketList(NpcInstance.java:2121)
at l2ro.gameserver.model.Player.addVisibleObject(Player.java:4771)
at l2ro.gameserver.model.WorldRegion.addToPlayers(WorldRegion.java:141)
at l2ro.gameserver.model.World.addVisibleObject(World.java:221)
at l2ro.gameserver.model.GameObject.spawn0(GameObject.java:263)
at l2ro.gameserver.model.GameObject.spawnMe(GameObject.java:251)
at l2ro.gameserver.model.Player.onTeleported(Player.java:7343)
at l2ro.gameserver.network.clientpackets.Appearing.runImpl(Appearing.java:42)
at l2ro.gameserver.network.clientpackets.L2GameClientPacket.run(L2GameClientPacket.java:49)
at l2ro.commons.net.nio.impl.MMOExecutableQueue.run(MMOExecutableQueue.java:39)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)



i use java 8 update 121

mysql 5.5.31



please help me