[22:18:56 ERROR]: Could not pass event InventoryClickEvent to ExtremeBans v1.3
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:297) ~[craftbukkit-1.8.jar:git-Bukkit-7019900]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[craftbukkit-1.8.jar:git-Bukkit-7019900]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:501) [craftbukkit-1.8.jar:git-Bukkit-7019900]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:486) [craftbukkit-1.8.jar:git-Bukkit-7019900]
        at net.minecraft.server.v1_8_R1.PlayerConnection.a(PlayerConnection.java:1521) [craftbukkit-1.8.jar:git-Bukkit-7019900]
        at net.minecraft.server.v1_8_R1.PacketPlayInWindowClick.a(SourceFile:31) [craftbukkit-1.8.jar:git-Bukkit-7019900]
        at net.minecraft.server.v1_8_R1.PacketPlayInWindowClick.a(SourceFile:9) [craftbukkit-1.8.jar:git-Bukkit-7019900]
        at net.minecraft.server.v1_8_R1.PacketHandleTask.run(SourceFile:13) [craftbukkit-1.8.jar:git-Bukkit-7019900]
        at java.util.concurrent.Executors$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_8_R1.MinecraftServer.z(MinecraftServer.java:656) [craftbukkit-1.8.jar:git-Bukkit-7019900]
        at net.minecraft.server.v1_8_R1.DedicatedServer.z(DedicatedServer.java:284) [craftbukkit-1.8.jar:git-Bukkit-7019900]
        at net.minecraft.server.v1_8_R1.MinecraftServer.y(MinecraftServer.java:609) [craftbukkit-1.8.jar:git-Bukkit-7019900]
        at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:517) [craftbukkit-1.8.jar:git-Bukkit-7019900]
        at java.lang.Thread.run(Thread.java:745) [?:1.8.0_112]
Caused by: java.lang.IllegalArgumentException: Name cannot be null
        at org.apache.commons.lang.Validate.notNull(Validate.java:192) ~[craftbukkit-1.8.jar:git-Bukkit-7019900]
        at org.bukkit.craftbukkit.v1_8_R1.CraftServer.getPlayer(CraftServer.java:387) ~[craftbukkit-1.8.jar:git-Bukkit-7019900]
        at me.goksi.extremebans.CommandHandler.onClick(CommandHandler.java:53) ~[?:?]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_112]
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_112]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_112]
        at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_112]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:295) ~[craftbukkit-1.8.jar:git-Bukkit-7019900]
        ... 14 more