EliteArmor - doesnt work

Could not pass event InventoryClickEvent to EliteArmor v4.9.7
org.bukkit.event.EventException
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:305) ~[spigot-1.8.jar:git-Spigot-550ebac-7019900]
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot-1.8.jar:git-Spigot-550ebac-7019900]
at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot-1.8.jar:git-Spigot-550ebac-7019900]
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot-1.8.jar:git-Spigot-550ebac-7019900]
at net.minecraft.server.v1_8_R1.PlayerConnection.a(PlayerConnection.java:1588) [spigot-1.8.jar:git-Spigot-550ebac-7019900]
at net.minecraft.server.v1_8_R1.PacketPlayInWindowClick.a(SourceFile:31) [spigot-1.8.jar:git-Spigot-550ebac-7019900]
at net.minecraft.server.v1_8_R1.PacketPlayInWindowClick.a(SourceFile:9) [spigot-1.8.jar:git-Spigot-550ebac-7019900]
at net.minecraft.server.v1_8_R1.PacketHandleTask.run(SourceFile:13) [spigot-1.8.jar:git-Spigot-550ebac-7019900]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_192]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_192]
at net.minecraft.server.v1_8_R1.MinecraftServer.z(MinecraftServer.java:696) [spigot-1.8.jar:git-Spigot-550ebac-7019900]
at net.minecraft.server.v1_8_R1.DedicatedServer.z(DedicatedServer.java:316) [spigot-1.8.jar:git-Spigot-550ebac-7019900]
at net.minecraft.server.v1_8_R1.MinecraftServer.y(MinecraftServer.java:634) [spigot-1.8.jar:git-Spigot-550ebac-7019900]
at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:537) [spigot-1.8.jar:git-Spigot-550ebac-7019900]
at java.lang.Thread.run(Thread.java:813) [?:1.8.0_192]
Caused by: java.lang.NullPointerException
at net.splodgebox.cosmic.nbt.NBTReflectionUtil.getItemRootNBTTagCompound(NBTReflectionUtil.java:48) ~[?:?]
at net.splodgebox.cosmic.nbt.NBTItem.getCompound(NBTItem.java:18) ~[?:?]
at net.splodgebox.cosmic.nbt.NBTReflectionUtil.setData(NBTReflectionUtil.java:328) ~[?:?]
at net.splodgebox.cosmic.nbt.NBTCompound.setString(NBTCompound.java:40) ~[?:?]
at net.splodgebox.cosmic.utils.ItemUtils.getHelmet(ItemUtils.java:58) ~[?:?]
at net.splodgebox.cosmic.utils.gui.cmdgui.ArmorGiveGUI.lambda$null$8(ArmorGiveGUI.java:22) ~[?:?]
at net.splodgebox.cosmic.utils.gui.cmdgui.ArmorGiveGUI$$Lambda$138.00000000B1540A60.click(Unknown Source) ~[?:?]
at net.splodgebox.cosmic.utils.gui.GuiListener.onInventoryClick(GuiListener.java:28) ~[?:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_192]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_192]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_192]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_192]
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:301) ~[spigot-1.8.jar:git-Spigot-550ebac-7019900]