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via bukkit.org by Unknown author, 1 year ago
java.lang.NullPointerException: 	at org.bukkit.craftbukkit.inventory.CraftInventory.getItem(CraftInventory.java:30)	at org.bukkit.craftbukkit.inventory.CraftInventoryPlayer.getHelmet(CraftInventoryPlayer.java:33)	at net.citizensnpcs.traders.TraderTask.clonePlayerInventory(TraderTask.java:331)	at net.citizensnpcs.traders.TraderTask.(TraderTask.java:44)	at net.citizensnpcs.traders.Trader.onRightClick(Trader.java:157)	at net.citizensnpcs.resources.npclib.HumanNPC.callRightClick(HumanNPC.java:73)	at net.citizensnpcs.listeners.EntityListen.onEntityTarget(EntityListen.java:114)	at org.bukkit.plugin.java.JavaPluginLoader$71.execute(JavaPluginLoader.java:766)	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:57)	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:327)	at net.citizensnpcs.listeners.PlayerListen.onPlayerInteractEntity(PlayerListen.java:84)	at org.bukkit.plugin.java.JavaPluginLoader$12.execute(JavaPluginLoader.java:349)	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:57)	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:327)	at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:923)	at net.minecraft.server.Packet7UseEntity.handle(SourceFile:33)	at net.minecraft.server.NetworkManager.b(NetworkManager.java:226)	at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:100)	at net.minecraft.server.NetworkListenThread.a(SourceFile:108)	at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:536)	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:434)	at net.minecraft.server.ThreadServerApplication.run(SourceFile:465)