[22:54:34 INFO]: Asska0021 issued server command: /dupe
[22:54:35 ERROR]: Could not pass event InventoryClickEvent to Fixer v1.4
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302) ~[patched.jar:git-PaperSpigot-"4c7641d"]
        at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:78) ~[patched.jar:git-PaperSpigot-"4c7641d"]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[patched.jar:git-PaperSpigot-"4c7641d"]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:517) [patched.jar:git-PaperSpigot-"4c7641d"]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:502) [patched.jar:git-PaperSpigot-"4c7641d"]
        at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:1657) [patched.jar:git-PaperSpigot-"4c7641d"]
        at net.minecraft.server.v1_8_R3.PacketPlayInWindowClick.a(SourceFile:31) [patched.jar:git-PaperSpigot-"4c7641d"]
        at net.minecraft.server.v1_8_R3.PacketPlayInWindowClick.a(SourceFile:9) [patched.jar:git-PaperSpigot-"4c7641d"]
        at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13) [patched.jar:git-PaperSpigot-"4c7641d"]
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_60]
        at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_60]
        at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:44) [patched.jar:git-PaperSpigot-"4c7641d"]
        at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:774) [patched.jar:git-PaperSpigot-"4c7641d"]
        at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:378) [patched.jar:git-PaperSpigot-"4c7641d"]
        at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:713) [patched.jar:git-PaperSpigot-"4c7641d"]
        at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:616) [patched.jar:git-PaperSpigot-"4c7641d"]
        at java.lang.Thread.run(Thread.java:745) [?:1.8.0_60]
Caused by: java.lang.NullPointerException: null key in entry: null=10
        at com.google.common.collect.CollectPreconditions.checkEntryNotNull(CollectPreconditions.java:31) ~[patched.jar:git-PaperSpigot-"4c7641d"]
        at com.google.common.collect.ImmutableMap.entryOf(ImmutableMap.java:135) ~[patched.jar:git-PaperSpigot-"4c7641d"]
        at com.google.common.collect.ImmutableMap$Builder.put(ImmutableMap.java:206) ~[patched.jar:git-PaperSpigot-"4c7641d"]
        at org.bukkit.craftbukkit.v1_8_R3.inventory.CraftItemStack.getEnchantments(CraftItemStack.java:299) ~[patched.jar:git-PaperSpigot-"4c7641d"]
        at org.bukkit.craftbukkit.v1_8_R3.inventory.CraftItemStack.getEnchantments(CraftItemStack.java:283) ~[patched.jar:git-PaperSpigot-"4c7641d"]
        at ru.quickston.fixer.Core.isLegit(Core.java:266) ~[?:?]
        at ru.quickston.fixer.Core.InventoryClick(Core.java:101) ~[?:?]
        at sun.reflect.GeneratedMethodAccessor293.invoke(Unknown Source) ~[?:?]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_60]
        at java.lang.reflect.Method.invoke(Method.java:497) ~[?:1.8.0_60]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:300) ~[patched.jar:git-PaperSpigot-"4c7641d"]
        ... 16 more