CommandMob 1.1.1 InventoryClickEvent

[01:29:40] [Server thread/INFO]: FatherWh0 issued server command: /commandmob create villager console
[01:29:46] [Server thread/ERROR]: Could not pass event InventoryClickEvent to CommandMob v1.0
org.bukkit.event.EventException
    at org.bukkit.plugin.EventExecutor$1.execute(EventExecutor.java:46) ~[patched_1.11.jar:git-Paper-956]
    at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:78) ~[patched_1.11.jar:git-Paper-956]
    at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[patched_1.11.jar:git-Paper-956]
    at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:517) [patched_1.11.jar:git-Paper-956]
    at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:502) [patched_1.11.jar:git-Paper-956]
    at net.minecraft.server.v1_11_R1.PlayerConnection.a(PlayerConnection.java:1883) [patched_1.11.jar:git-Paper-956]
    at net.minecraft.server.v1_11_R1.PacketPlayInWindowClick.a(SourceFile:33) [patched_1.11.jar:git-Paper-956]
    at net.minecraft.server.v1_11_R1.PacketPlayInWindowClick.a(SourceFile:10) [patched_1.11.jar:git-Paper-956]
    at net.minecraft.server.v1_11_R1.PlayerConnectionUtils$1.run(SourceFile:13) [patched_1.11.jar:git-Paper-956]
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_91]
    at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_91]
    at net.minecraft.server.v1_11_R1.SystemUtils.a(SourceFile:46) [patched_1.11.jar:git-Paper-956]
    at net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:817) [patched_1.11.jar:git-Paper-956]
    at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:403) [patched_1.11.jar:git-Paper-956]
    at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:749) [patched_1.11.jar:git-Paper-956]
    at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:648) [patched_1.11.jar:git-Paper-956]
    at java.lang.Thread.run(Thread.java:745) [?:1.8.0_91]
Caused by: java.lang.NullPointerException
    at me.creeperded3.commandmob.listeners.InventoryListeners.onClick(InventoryListeners.java:27) ~[?:?]
    at com.destroystokyo.paper.event.executor.asm.generated.GeneratedEventExecutor219.execute(Unknown Source) ~[?:?]
    at org.bukkit.plugin.EventExecutor$1.execute(EventExecutor.java:44) ~[patched_1.11.jar:git-Paper-956]
    ... 16 more