java.lang.NullPointerException

bukkit.org | 4 weeks ago
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Root Cause Analysis

  1. java.lang.NullPointerException

    No message provided

    at org.bukkit.craftbukkit.inventory.CraftInventory.getItem()
  2. org.bukkit.craftbukkit
    CraftInventoryPlayer.getHelmet
    1. org.bukkit.craftbukkit.inventory.CraftInventory.getItem(CraftInventory.java:30)
    2. org.bukkit.craftbukkit.inventory.CraftInventoryPlayer.getHelmet(CraftInventoryPlayer.java:33)
    2 frames
  3. net.citizensnpcs.traders
    Trader.onRightClick
    1. net.citizensnpcs.traders.TraderTask.clonePlayerInventory(TraderTask.java:331)
    2. net.citizensnpcs.traders.TraderTask.<init>(TraderTask.java:44)
    3. net.citizensnpcs.traders.Trader.onRightClick(Trader.java:157)
    3 frames
  4. net.citizensnpcs.resources
    HumanNPC.callRightClick
    1. net.citizensnpcs.resources.npclib.HumanNPC.callRightClick(HumanNPC.java:73)
    1 frame
  5. net.citizensnpcs.listeners
    EntityListen.onEntityTarget
    1. net.citizensnpcs.listeners.EntityListen.onEntityTarget(EntityListen.java:114)
    1 frame
  6. Bukkit
    SimplePluginManager.callEvent
    1. org.bukkit.plugin.java.JavaPluginLoader$71.execute(JavaPluginLoader.java:766)
    2. org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:57)
    3. org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:327)
    3 frames
  7. net.citizensnpcs.listeners
    PlayerListen.onPlayerInteractEntity
    1. net.citizensnpcs.listeners.PlayerListen.onPlayerInteractEntity(PlayerListen.java:84)
    1 frame
  8. Bukkit
    SimplePluginManager.callEvent
    1. org.bukkit.plugin.java.JavaPluginLoader$12.execute(JavaPluginLoader.java:349)
    2. org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:57)
    3. org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:327)
    3 frames
  9. MC Server
    ThreadServerApplication.run
    1. net.minecraft.server.NetServerHandler.a(NetServerHandler.java:923)
    2. net.minecraft.server.Packet7UseEntity.handle(SourceFile:33)
    3. net.minecraft.server.NetworkManager.b(NetworkManager.java:226)
    4. net.minecraft.server.NetServerHandler.a(NetServerHandler.java:100)
    5. net.minecraft.server.NetworkListenThread.a(SourceFile:108)
    6. net.minecraft.server.MinecraftServer.w(MinecraftServer.java:536)
    7. net.minecraft.server.MinecraftServer.run(MinecraftServer.java:434)
    8. net.minecraft.server.ThreadServerApplication.run(SourceFile:465)
    8 frames