Ошибки
 

[14:35:35] ERROR
java.lang.NullPointerException
at l2s.gameserver.skills.skillclasses.Summon.useSkill (Summon.java:143)
at l2s.gameserver.model.Creature.callSkill(Creature.j ava:1095)
at l2s.gameserver.model.Playable.callSkill(Playable.j ava:533)
at l2s.gameserver.model.Creature.onMagicUseTimer(Crea ture.java:3054)
at l2s.gameserver.model.GameObjectTasks$MagicUseTask. runImpl(GameObjectTasks.java:349)
at l2s.commons.threading.RunnableImpl.run(RunnableImp l.java:21)
at java.util.concurrent.Executors$RunnableAdapter.cal l(Executors.java:441)
at java.util.concurrent.FutureTask$Sync.innerRun(Futu reTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.jav a:138)
at java.util.concurrent.ScheduledThreadPoolExecutor$S cheduledFutureTask.access$301(ScheduledThreadPoolE xecutor.java:98)
at java.util.concurrent.ScheduledThreadPoolExecutor$S cheduledFutureTask.run(ScheduledThreadPoolExecutor .java:206)
at java.util.concurrent.ThreadPoolExecutor$Worker.run Task(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)

[15:25:07] WARN ItemHolder: Not defined item id : 35564, or out of range!
java.lang.Exception
at l2s.gameserver.data.xml.holder.ItemHolder.getTempl ate(ItemHolder.java:58)
at l2s.gameserver.model.base.MultiSellIngredient.isSt ackable(MultiSellIngredient.java:62)
at l2s.gameserver.network.l2.s2c.MultiSellList.writeI mpl(MultiSellList.java:46)
at l2s.gameserver.network.l2.s2c.L2GameServerPacket.w rite(L2GameServerPacket.java:28)
at l2s.commons.net.nio.impl.SelectorThread.putPacketI ntoWriteBuffer(SelectorThread.java:524)
at l2s.commons.net.nio.impl.SelectorThread.prepareWri teBuffer(SelectorThread.java:492)
at l2s.commons.net.nio.impl.SelectorThread.writePacke t(SelectorThread.java:421)
at l2s.commons.net.nio.impl.SelectorThread.run(Select orThread.java:185)

[15:14:30] ERROR Unable to create instance of NPC 14960
java.lang.IllegalArgumentException
at sun.reflect.GeneratedConstructorAccessor228.newIns tance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newI nstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Construc tor.java:513)
at l2s.gameserver.templates.npc.NpcTemplate.getNewIns tance(NpcTemplate.java:163)
at l2s.gameserver.skills.skillclasses.Summon.useSkill (Summon.java:141)
at l2s.gameserver.model.Creature.callSkill(Creature.j ava:1095)
at l2s.gameserver.model.Playable.callSkill(Playable.j ava:533)
at l2s.gameserver.model.Creature.onMagicUseTimer(Crea ture.java:3054)
at l2s.gameserver.model.GameObjectTasks$MagicUseTask. runImpl(GameObjectTasks.java:349)
at l2s.commons.threading.RunnableImpl.run(RunnableImp l.java:21)
at java.util.concurrent.Executors$RunnableAdapter.cal l(Executors.java:441)
at java.util.concurrent.FutureTask$Sync.innerRun(Futu reTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.jav a:138)
at java.util.concurrent.ScheduledThreadPoolExecutor$S cheduledFutureTask.access$301(ScheduledThreadPoolE xecutor.java:98)
at java.util.concurrent.ScheduledThreadPoolExecutor$S cheduledFutureTask.run(ScheduledThreadPoolExecutor .java:206)
at java.util.concurrent.ThreadPoolExecutor$Worker.run Task(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)

из-за ошибки в сумонах сервер вероятно грузится сильней чем надо.

Обе ошибки исправлены.