[10:39:30] [Server thread/ERROR]: Could not pass event EntityDeathEvent to Template v1.0
org.bukkit.event.EventException: null
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:319) ~[spigot-1.16.3.jar:git-Spigot-988b411-1f4693a]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70) ~[spigot-1.16.3.jar:git-Spigot-988b411-1f4693a]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:589) ~[spigot-1.16.3.jar:git-Spigot-988b411-1f4693a]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:576) ~[spigot-1.16.3.jar:git-Spigot-988b411-1f4693a]
        at org.bukkit.craftbukkit.v1_16_R2.event.CraftEventFactory.callEntityDeathEvent(CraftEventFactory.java:764) ~[spigot-1.16.3.jar:git-Spigot-988b411-1f4693a]
        at net.minecraft.server.v1_16_R2.EntityLiving.d(EntityLiving.java:1441) ~[spigot-1.16.3.jar:git-Spigot-988b411-1f4693a]
        at net.minecraft.server.v1_16_R2.EntityLiving.die(EntityLiving.java:1389) ~[spigot-1.16.3.jar:git-Spigot-988b411-1f4693a]
        at net.minecraft.server.v1_16_R2.EntityLiving.damageEntity(EntityLiving.java:1235) ~[spigot-1.16.3.jar:git-Spigot-988b411-1f4693a]
        at net.minecraft.server.v1_16_R2.EntityHuman.attack(EntityHuman.java:1068) ~[spigot-1.16.3.jar:git-Spigot-988b411-1f4693a]
        at net.minecraft.server.v1_16_R2.EntityPlayer.attack(EntityPlayer.java:1629) ~[spigot-1.16.3.jar:git-Spigot-988b411-1f4693a]
        at net.minecraft.server.v1_16_R2.PlayerConnection.a(PlayerConnection.java:1910) ~[spigot-1.16.3.jar:git-Spigot-988b411-1f4693a]
        at net.minecraft.server.v1_16_R2.PacketPlayInUseEntity.a(SourceFile:74) ~[spigot-1.16.3.jar:git-Spigot-988b411-1f4693a]
        at net.minecraft.server.v1_16_R2.PacketPlayInUseEntity.a(SourceFile:13) ~[spigot-1.16.3.jar:git-Spigot-988b411-1f4693a]
        at net.minecraft.server.v1_16_R2.PlayerConnectionUtils.lambda$0(PlayerConnectionUtils.java:19) ~[spigot-1.16.3.jar:git-Spigot-988b411-1f4693a]
        at net.minecraft.server.v1_16_R2.TickTask.run(SourceFile:18) ~[spigot-1.16.3.jar:git-Spigot-988b411-1f4693a]
        at net.minecraft.server.v1_16_R2.IAsyncTaskHandler.executeTask(SourceFile:144) ~[spigot-1.16.3.jar:git-Spigot-988b411-1f4693a]
        at net.minecraft.server.v1_16_R2.IAsyncTaskHandlerReentrant.executeTask(SourceFile:23) ~[spigot-1.16.3.jar:git-Spigot-988b411-1f4693a]
        at net.minecraft.server.v1_16_R2.IAsyncTaskHandler.executeNext(SourceFile:118) ~[spigot-1.16.3.jar:git-Spigot-988b411-1f4693a]
        at net.minecraft.server.v1_16_R2.MinecraftServer.ba(MinecraftServer.java:941) ~[spigot-1.16.3.jar:git-Spigot-988b411-1f4693a]
        at net.minecraft.server.v1_16_R2.MinecraftServer.executeNext(MinecraftServer.java:934) ~[spigot-1.16.3.jar:git-Spigot-988b411-1f4693a]
        at net.minecraft.server.v1_16_R2.IAsyncTaskHandler.awaitTasks(SourceFile:127) ~[spigot-1.16.3.jar:git-Spigot-988b411-1f4693a]
        at net.minecraft.server.v1_16_R2.MinecraftServer.sleepForTick(MinecraftServer.java:918) ~[spigot-1.16.3.jar:git-Spigot-988b411-1f4693a]
        at net.minecraft.server.v1_16_R2.MinecraftServer.w(MinecraftServer.java:850) ~[spigot-1.16.3.jar:git-Spigot-988b411-1f4693a]
        at net.minecraft.server.v1_16_R2.MinecraftServer.lambda$0(MinecraftServer.java:164) ~[spigot-1.16.3.jar:git-Spigot-988b411-1f4693a]
        at java.lang.Thread.run(Thread.java:834) [?:?]
Caused by: java.lang.IllegalArgumentException: Parameters not allowed in this parameter set: [<parameter minecraft:origin>]
        at net.minecraft.server.v1_16_R2.LootTableInfo$Builder.build(SourceFile:203) ~[spigot-1.16.3.jar:git-Spigot-988b411-1f4693a]
        at org.bukkit.craftbukkit.v1_16_R2.CraftLootTable.convertContext(CraftLootTable.java:115) ~[spigot-1.16.3.jar:git-Spigot-988b411-1f4693a]
        at org.bukkit.craftbukkit.v1_16_R2.CraftLootTable.populateLoot(CraftLootTable.java:44) ~[spigot-1.16.3.jar:git-Spigot-988b411-1f4693a]
        at uk.antiperson.test.Template.onEquipt(Template.java:29) ~[?:?]
        at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
        at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:?]
        at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]
        at java.lang.reflect.Method.invoke(Method.java:566) ~[?:?]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:315) ~[spigot-1.16.3.jar:git-Spigot-988b411-1f4693a]
        ... 24 more