java.lang.NullPointerException
        at net.sf.l2j.gameserver.model.L2Attackable.reduceCurrentHp(L2Attackable
.java:388)
        at net.sf.l2j.gameserver.model.actor.instance.L2GrandBossInstance.reduce
CurrentHp(L2GrandBossInstance.java:56)
        at net.sf.l2j.gameserver.skills.effects.EffectDamOverTime.onActionTime(E
ffectDamOverTime.java:63)
        at net.sf.l2j.gameserver.model.L2Effect.scheduleEffect(L2Effect.java:429
)
        at net.sf.l2j.gameserver.model.L2Effect$EffectTask.run(L2Effect.java:149
)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:44
1)
        at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java
:317)
        at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.
access$101(ScheduledThreadPoolExecutor.java:98)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.
runPeriodic(ScheduledThreadPoolExecutor.java:181)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.
run(ScheduledThreadPoolExecutor.java:205)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExec
utor.java:885)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor
.java:907)
        at java.lang.Thread.run(Thread.java:619)


java.lang.NullPointerException
        at net.sf.l2j.gameserver.model.L2Attackable.reduceCurrentHp(L2Attackable
.java:388)
        at net.sf.l2j.gameserver.model.actor.instance.L2GrandBossInstance.reduce
CurrentHp(L2GrandBossInstance.java:56)
        at net.sf.l2j.gameserver.skills.effects.EffectDamOverTime.onActionTime(E
ffectDamOverTime.java:63)
        at net.sf.l2j.gameserver.model.L2Effect.scheduleEffect(L2Effect.java:429
)
        at net.sf.l2j.gameserver.model.L2Effect$EffectTask.run(L2Effect.java:149
)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:44
1)
        at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java
:317)
        at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.
access$101(ScheduledThreadPoolExecutor.java:98)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.
runPeriodic(ScheduledThreadPoolExecutor.java:181)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.
run(ScheduledThreadPoolExecutor.java:205)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExec
utor.java:885)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor
.java:907)
        at java.lang.Thread.run(Thread.java:619)


java.lang.NullPointerException
        at net.sf.l2j.gameserver.model.L2Attackable.reduceCurrentHp(L2Attackable
.java:388)
        at net.sf.l2j.gameserver.model.actor.instance.L2GrandBossInstance.reduce
CurrentHp(L2GrandBossInstance.java:56)
        at net.sf.l2j.gameserver.skills.effects.EffectDamOverTime.onActionTime(E
ffectDamOverTime.java:63)
        at net.sf.l2j.gameserver.model.L2Effect.scheduleEffect(L2Effect.java:429
)
        at net.sf.l2j.gameserver.model.L2Effect$EffectTask.run(L2Effect.java:149
)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:44
1)
        at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java
:317)
        at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.
access$101(ScheduledThreadPoolExecutor.java:98)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.
runPeriodic(ScheduledThreadPoolExecutor.java:181)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.
run(ScheduledThreadPoolExecutor.java:205)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExec
utor.java:885)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor
.java:907)
        at java.lang.Thread.run(Thread.java:619)