Could not pass event InventoryClickEvent to MD-Enchant v6.9
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_161]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_161]
	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:748) [?:1.8.0_161]
Caused by: java.lang.NullPointerException
	at net.minecraft.server.v1_8_R3.Enchantment.canEnchant(Enchantment.java:119) ~[patched.jar:git-PaperSpigot-"4c7641d"]
	at org.bukkit.craftbukkit.v1_8_R3.enchantments.CraftEnchantment.canEnchantItem(CraftEnchantment.java:57) ~[patched.jar:git-PaperSpigot-"4c7641d"]
	at org.bukkit.enchantments.EnchantmentWrapper.canEnchantItem(EnchantmentWrapper.java:39) ~[patched.jar:git-PaperSpigot-"4c7641d"]
	at pl.gr0chu.listeners.CustomEnchantInventoryListener.isAllowedEnchant(CustomEnchantInventoryListener.java:96) ~[?:?]
	at pl.gr0chu.gui.action.enchant.EnchantAction.execute(EnchantAction.java:33) ~[?:?]
	at pl.gr0chu.gui.action.InventoryGUI.onInventoryClick(InventoryGUI.java:97) ~[?:?]
	at sun.reflect.GeneratedMethodAccessor250.invoke(Unknown Source) ~[?:?]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_161]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_161]
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:300) ~[patched.j