> [10:11:06 ERROR]: Could not pass event InventoryClickEvent to MassiveCore v2.14.0
org.bukkit.event.EventException
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:309) ~[BeerSpigot.jar:git-TacoSpigot-bf023c7d]
at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:78) ~[BeerSpigot.jar:git-TacoSpigot-bf023c7d]
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[BeerSpigot.jar:git-TacoSpigot-bf023c7d]
at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:508) [BeerSpigot.jar:git-TacoSpigot-bf023c7d]
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:493) [BeerSpigot.jar:git-TacoSpigot-bf023c7d]
at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:1646) [BeerSpigot.jar:git-TacoSpigot-bf023c7d]
at net.minecraft.server.v1_8_R3.PacketPlayInWindowClick.a(SourceFile:31) [BeerSpigot.jar:git-TacoSpigot-bf023c7d]
at net.minecraft.server.v1_8_R3.PacketPlayInWindowClick.a(SourceFile:9) [BeerSpigot.jar:git-TacoSpigot-bf023c7d]
at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13) [BeerSpigot.jar:git-TacoSpigot-bf023c7d]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_212]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_212]
at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:44) [BeerSpigot.jar:git-TacoSpigot-bf023c7d]
at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:785) [BeerSpigot.jar:git-TacoSpigot-bf023c7d]
at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:422) [BeerSpigot.jar:git-TacoSpigot-bf023c7d]
at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:724) [BeerSpigot.jar:git-TacoSpigot-bf023c7d]
at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:627) [BeerSpigot.jar:git-TacoSpigot-bf023c7d]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_212]
Caused by: java.lang.NullPointerException: null key in entry: null=1
at com.google.common.collect.CollectPreconditions.checkEntryNotNull(CollectPreconditions.java:31) ~[BeerSpigot.jar:git-TacoSpigot-bf023c7d]
at com.google.common.collect.ImmutableMap.entryOf(ImmutableMap.java:135) ~[BeerSpigot.jar:git-TacoSpigot-bf023c7d]
at com.google.common.collect.ImmutableMap$Builder.put(ImmutableMap.java:206) ~[BeerSpigot.jar:git-TacoSpigot-bf023c7d]
at org.bukkit.craftbukkit.v1_8_R3.inventory.CraftItemStack.getEnchantments(CraftItemStack.java:299) ~[BeerSpigot.jar:git-TacoSpigot-bf023c7d]
at org.bukkit.craftbukkit.v1_8_R3.inventory.CraftItemStack.getEnchantments(CraftItemStack.java:283) ~[BeerSpigot.jar:git-TacoSpigot-bf023c7d]
at com.massivecraft.massivecore.util.Txt.getItemName(Txt.java:448) ~[?:?]
at com.massivecraft.massivecore.util.Txt.createItemMson(Txt.java:464) ~[?:?]
at com.massivecraft.factions.entity.Rewards$ActionShop.onClick(Rewards.java:142) ~[?:?]
at com.massivecraft.massivecore.engine.EngineMassiveCoreChestGui.onClick(EngineMassiveCoreChestGui.java:83) ~[?:?]
at sun.reflect.GeneratedMethodAccessor471.invoke(Unknown Source) ~[?:?]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_212]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_212]
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:307) ~[BeerSpigot.jar:git-TacoSpigot-bf023c7d]
... 16 more