[18:52:07 ERROR]: Could not pass event InventoryClickEvent to PlotMines v2.0.4
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot-1.11.2.jar:git-Spigot-a3f6ea5-2453830]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot-1.11.2.jar:git-Spigot-a3f6ea5-2453830]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot-1.11.2.jar:git-Spigot-a3f6ea5-2453830]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot-1.11.2.jar:git-Spigot-a3f6ea5-2453830]
        at net.minecraft.server.v1_11_R1.PlayerConnection.a(PlayerConnection.java:1849) [spigot-1.11.2.jar:git-Spigot-a3f6ea5-2453830]
        at net.minecraft.server.v1_11_R1.PacketPlayInWindowClick.a(SourceFile:33) [spigot-1.11.2.jar:git-Spigot-a3f6ea5-2453830]
        at net.minecraft.server.v1_11_R1.PacketPlayInWindowClick.a(SourceFile:10) [spigot-1.11.2.jar:git-Spigot-a3f6ea5-2453830]
        at net.minecraft.server.v1_11_R1.PlayerConnectionUtils$1.run(SourceFile:13) [spigot-1.11.2.jar:git-Spigot-a3f6ea5-2453830]
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_112]
        at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_112]
        at net.minecraft.server.v1_11_R1.SystemUtils.a(SourceFile:46) [spigot-1.11.2.jar:git-Spigot-a3f6ea5-2453830]
        at net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:747) [spigot-1.11.2.jar:git-Spigot-a3f6ea5-2453830]
        at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:399) [spigot-1.11.2.jar:git-Spigot-a3f6ea5-2453830]
        at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:678) [spigot-1.11.2.jar:git-Spigot-a3f6ea5-2453830]
        at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:576) [spigot-1.11.2.jar:git-Spigot-a3f6ea5-2453830]
        at java.lang.Thread.run(Thread.java:745) [?:1.8.0_112]
Caused by: java.lang.NullPointerException