shopkeeper

15:45:50 [SEVERE] Could not pass event InventoryMoveItemEvent to Shopkeepers v1.13
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:427)
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:477)
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:462)
        at net.minecraft.server.v1_5_R2.TileEntityHopper.tryTakeInItemFromSlot(TileEntityHopper.java:289)
        at net.minecraft.server.v1_5_R2.TileEntityHopper.suckInItems(TileEntityHopper.java:262)
        at net.minecraft.server.v1_5_R2.TileEntityHopper.j(TileEntityHopper.java:181)
        at net.minecraft.server.v1_5_R2.TileEntityHopper.h(TileEntityHopper.java:173)
        at net.minecraft.server.v1_5_R2.World.tickEntities(World.java:1265)
        at net.minecraft.server.v1_5_R2.WorldServer.tickEntities(WorldServer.java:480)
        at net.minecraft.server.v1_5_R2.MinecraftServer.r(MinecraftServer.java:560)
        at net.minecraft.server.v1_5_R2.DedicatedServer.r(DedicatedServer.java:225)
        at net.minecraft.server.v1_5_R2.MinecraftServer.q(MinecraftServer.java:474)
        at net.minecraft.server.v1_5_R2.MinecraftServer.run(MinecraftServer.java:407)
        at net.minecraft.server.v1_5_R2.ThreadServerApplication.run(SourceFile:573)
Caused by: java.lang.NullPointerException
        at com.nisovin.shopkeepers.ChestProtectListener.onInventoryMoveItem(ChestProtectListener.java:85)
        at sun.reflect.GeneratedMethodAccessor584.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:601)
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:425)
        ... 14 more