[20:35:11] [Server thread/ERROR]: Could not pass event InventoryOpenEvent to DeathPosition v1.1
org.bukkit.event.EventException: null
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[custom.jar:git-Spigot-6629162-c7920f4]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[custom.jar:git-Spigot-6629162-c7920f4]
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:499) [custom.jar:git-Spigot-6629162-c7920f4]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:484) [custom.jar:git-Spigot-6629162-c7920f4]
	at org.bukkit.craftbukkit.v1_12_R1.event.CraftEventFactory.callInventoryOpenEvent(CraftEventFactory.java:755) [custom.jar:git-Spigot-6629162-c7920f4]
	at org.bukkit.craftbukkit.v1_12_R1.event.CraftEventFactory.callInventoryOpenEvent(CraftEventFactory.java:741) [custom.jar:git-Spigot-6629162-c7920f4]
	at net.minecraft.server.v1_12_R1.EntityPlayer.openTrade(EntityPlayer.java:829) [custom.jar:git-Spigot-6629162-c7920f4]
	at net.minecraft.server.v1_12_R1.EntityVillager.a(EntityVillager.java:174) [custom.jar:git-Spigot-6629162-c7920f4]
	at net.minecraft.server.v1_12_R1.EntityInsentient.b(EntityInsentient.java:1017) [custom.jar:git-Spigot-6629162-c7920f4]
	at net.minecraft.server.v1_12_R1.EntityHuman.a(EntityHuman.java:894) [custom.jar:git-Spigot-6629162-c7920f4]
	at net.minecraft.server.v1_12_R1.PlayerConnection.a(PlayerConnection.java:1581) [custom.jar:git-Spigot-6629162-c7920f4]
	at net.minecraft.server.v1_12_R1.PacketPlayInUseEntity.a(SourceFile:69) [custom.jar:git-Spigot-6629162-c7920f4]
	at net.minecraft.server.v1_12_R1.PacketPlayInUseEntity.a(SourceFile:13) [custom.jar:git-Spigot-6629162-c7920f4]
	at net.minecraft.server.v1_12_R1.PlayerConnectionUtils$1.run(SourceFile:13) [custom.jar:git-Spigot-6629162-c7920f4]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_71]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_71]
	at net.minecraft.server.v1_12_R1.SystemUtils.a(SourceFile:46) [custom.jar:git-Spigot-6629162-c7920f4]
	at net.minecraft.server.v1_12_R1.MinecraftServer.D(MinecraftServer.java:747) [custom.jar:git-Spigot-6629162-c7920f4]
	at net.minecraft.server.v1_12_R1.DedicatedServer.D(DedicatedServer.java:405) [custom.jar:git-Spigot-6629162-c7920f4]
	at net.minecraft.server.v1_12_R1.MinecraftServer.C(MinecraftServer.java:678) [custom.jar:git-Spigot-6629162-c7920f4]
	at net.minecraft.server.v1_12_R1.MinecraftServer.run(MinecraftServer.java:576) [custom.jar:git-Spigot-6629162-c7920f4]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_71]
Caused by: java.lang.IllegalArgumentException: Chests must have a size that is a multiple of 9!
	at org.apache.commons.lang.Validate.isTrue(Validate.java:136) ~[custom.jar:git-Spigot-6629162-c7920f4]
	at org.bukkit.craftbukkit.v1_12_R1.CraftServer.createInventory(CraftServer.java:1509) ~[custom.jar:git-Spigot-6629162-c7920f4]
	at org.bukkit.Bukkit.createInventory(Bukkit.java:907) ~[custom.jar:git-Spigot-6629162-c7920f4]
	at Main.DeathInv(Main.java:114) ~[?:?]
	at Main.onInvOpen(Main.java:122) ~[?:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_71]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_71]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_71]
	at java.lang.reflect.Method.invoke(Method.java:497) ~[?:1.8.0_71]
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302) ~[custom.jar:git-Spigot-6629162-c7920f4]
	... 21 more