help error

[amegaamber]

помогите разобраться с ошибкой

java.lang.NullPointerException
at l2p.gameserver.model.L2Character.startAttackStance Task(L2Character.java:3739)
at l2p.gameserver.model.L2Character.callSkill(L2Chara cter.java:971)
at l2p.gameserver.model.L2Character.onMagicUseTimer(L 2Character.java:2928)
at l2p.gameserver.model.L2ObjectTasks$MagicUseTask.ru n(L2ObjectTasks.java:550)
at java.util.concurrent.Executors$RunnableAdapter.cal l(Executors.java:439)
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$Worker.run Task(ThreadPoolExecutor.java:895)
at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:918)
at java.lang.Thread.run(Thread.java:662)