some errormessages i cant read

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Hello

Can you help me please with this errors?

 

java.lang.ClassCastException: com.wurmonline.server.creatures.Npc cannot be cast to com.wurmonline.server.players.Player

at com.wurmonline.server.behaviours.ItemBehaviour.action(ItemBehaviour.java:2971)

at com.wurmonline.server.behaviours.Action.poll(Action.java:3500)

at com.wurmonline.server.behaviours.ActionStack.poll(ActionStack.java:237)

at com.wurmonline.server.creatures.Creature.poll(Creature.java:5791)

at com.wurmonline.server.creatures.Creatures.pollAllCreatures(Creatures.java:1756)

at com.wurmonline.server.zones.Zones.pollNextZones(Zones.java:1779)

at com.wurmonline.server.Server.run(Server.java:1853)

at java.util.TimerThread.mainLoop(Timer.java:555)

at java.util.TimerThread.run(Timer.java:505)

[08:05:02 AM] INFO com.wurmonline.server.creatures.Creatures: com.wurmonline.server.creatures.Npc cannot be cast to com.wurmonline.server.players.Player

java.lang.ClassCastException: com.wurmonline.server.creatures.Npc cannot be cast to com.wurmonline.server.players.Player

at com.wurmonline.server.behaviours.ItemBehaviour.action(ItemBehaviour.java:2971)

at com.wurmonline.server.behaviours.Action.poll(Action.java:3500)

at com.wurmonline.server.behaviours.ActionStack.poll(ActionStack.java:237)

at com.wurmonline.server.creatures.Creature.poll(Creature.java:5791)

at com.wurmonline.server.creatures.Creatures.pollAllCreatures(Creatures.java:1756)

at com.wurmonline.server.zones.Zones.pollNextZones(Zones.java:1779)

at com.wurmonline.server.Server.run(Server.java:1853)

at java.util.TimerThread.mainLoop(Timer.java:555)

at java.util.TimerThread.run(Timer.java:505)

 

This two blocks are coming each second and i dont know where i can find the problem

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