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java.lang.NullPointerException: 	at io.ibj.mcauthenticator.engine.events.InventoryEvent.auth(InventoryEvent.java:61)	at io.ibj.mcauthenticator.engine.events.InventoryEvent.onDrop(InventoryEvent.java:52)	at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor284.execute(Unknown Source)	at org.bukkit.plugin.EventExecutor$1.execute(EventExecutor.java:44)	at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:78)	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:517)	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:502)	at net.minecraft.server.v1_11_R1.EntityHuman.a(EntityHuman.java:582)	at net.minecraft.server.v1_11_R1.EntityHuman.drop(EntityHuman.java:540)	at net.minecraft.server.v1_11_R1.CommandGive.execute(SourceFile:75)	at org.bukkit.craftbukkit.v1_11_R1.command.VanillaCommandWrapper.dispatchVanillaCommand(VanillaCommandWrapper.java:109)	at org.bukkit.craftbukkit.v1_11_R1.command.VanillaCommandWrapper.execute(VanillaCommandWrapper.java:38)	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:151)	at org.bukkit.craftbukkit.v1_11_R1.CraftServer.dispatchCommand(CraftServer.java:675)	at com.laytonsmith.abstraction.bukkit.BukkitMCServer.dispatchCommand(BukkitMCServer.java:129)	at com.laytonsmith.core.functions.Meta$sudo.exec(Meta.java:236)	at com.laytonsmith.core.Script.eval(Script.java:375)	at com.laytonsmith.core.Script.eval(Script.java:344)	at com.laytonsmith.core.MethodScriptCompiler.execute(MethodScriptCompiler.java:1995)	at com.laytonsmith.core.MethodScriptCompiler.execute(MethodScriptCompiler.java:1952)	at com.laytonsmith.core.Script.run(Script.java:207)	at com.laytonsmith.core.AliasCore.alias(AliasCore.java:153)	at com.laytonsmith.core.functions.Meta$call_alias.exec(Meta.java:496)	at com.laytonsmith.core.Script.eval(Script.java:375)	at com.laytonsmith.core.Script.eval(Script.java:344)	at com.laytonsmith.core.Script.seval(Script.java:253)	at com.laytonsmith.core.functions.BasicLogic$_if.execs(BasicLogic.java:85)	at com.laytonsmith.core.Script.eval(Script.java:334)	at com.laytonsmith.core.Script.eval(Script.java:344)	at com.laytonsmith.core.MethodScriptCompiler.execute(MethodScriptCompiler.java:1995)	at com.laytonsmith.core.MethodScriptCompiler.execute(MethodScriptCompiler.java:1952)	at com.laytonsmith.core.events.AbstractEvent.execute(AbstractEvent.java:109)	at com.laytonsmith.core.events.BoundEvent.execute(BoundEvent.java:320)	at com.laytonsmith.core.events.BoundEvent.trigger(BoundEvent.java:278)	at com.laytonsmith.core.events.EventUtils.FireListeners(EventUtils.java:253)	at com.laytonsmith.core.events.EventUtils.TriggerListener(EventUtils.java:240)	at com.laytonsmith.abstraction.bukkit.events.drivers.BukkitPlayerListener.onPlayerJoin(BukkitPlayerListener.java:73)	at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor235.execute(Unknown Source)	at org.bukkit.plugin.EventExecutor$1.execute(EventExecutor.java:44)	at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:78)	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:517)	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:502)	at net.minecraft.server.v1_11_R1.PlayerList.onPlayerJoin(PlayerList.java:352)	at net.minecraft.server.v1_11_R1.PlayerList.a(PlayerList.java:178)	at net.minecraft.server.v1_11_R1.LoginListener.b(LoginListener.java:153)	at net.minecraft.server.v1_11_R1.LoginListener.F_(LoginListener.java:57)	at net.minecraft.server.v1_11_R1.NetworkManager.a(NetworkManager.java:239)	at net.minecraft.server.v1_11_R1.ServerConnection.c(ServerConnection.java:150)	at net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:916)	at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:403)	at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:749)	at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:648)	at java.lang.Thread.run(Thread.java:745)