2021-04-15 22:05:07 [SEVERE] Could not pass event EntityDeathEvent to OtherDrops v2.8b.573
org.bukkit.event.EventException
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:437)
    at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
    at org.bukkit.plugin.TimedRegisteredListener.callEvent(TimedRegisteredListener.java:48)
    at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:479)
    at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java)
    at org.bukkit.craftbukkit.v1_6_R3.event.CraftEventFactory.callEntityDeathEvent(CraftEventFactory.java:354)
    at org.bukkit.craftbukkit.v1_6_R3.event.CraftEventFactory.callEntityDeathEvent(CraftEventFactory.java:348)
    at net.minecraft.entity.EntityLivingBase.func_70645_a(EntityLivingBase.java:838)
    at noppes.npcs.EntityNPCInterface.func_70645_a(EntityNPCInterface.java:1354)
    at net.minecraft.entity.EntityLivingBase.func_70097_a(EntityLivingBase.java:763)
    at noppes.npcs.EntityNPCInterface.func_70097_a(EntityNPCInterface.java:665)
    at noppes.npcs.EntityNPCInterface.func_70652_k(EntityNPCInterface.java:158)
    at noppes.npcs.ai.EntityAIAttackTarget.func_75246_d(EntityAIAttackTarget.java:127)
    at net.minecraft.entity.ai.EntityAITasks.func_75774_a(EntityAITasks.java:123)
    at net.minecraft.entity.EntityLiving.func_70619_bc(EntityLiving.java:60)
    at net.minecraft.entity.EntityLivingBase.func_70636_d(EntityLivingBase.java:196)
    at net.minecraft.entity.EntityLiving.func_70636_d(EntityLiving.java)
    at noppes.npcs.EntityNPCInterface.func_70636_d(EntityNPCInterface.java:306)
    at net.minecraft.entity.EntityLivingBase.func_70071_h_(EntityLivingBase.java:1361)
    at net.minecraft.entity.EntityLiving.func_70071_h_(EntityLiving.java:187)
    at noppes.npcs.EntityNPCInterface.func_70071_h_(EntityNPCInterface.java:581)
    at net.minecraft.world.World.func_72866_a(World.java:387)
    at net.minecraft.world.WorldServer.func_72866_a(WorldServer.java:1006)
    at net.minecraft.world.World.func_72870_g(World.java:2890)
    at nallar.tickthreading.minecraft.tickregion.EntityTickRegion.doTick(EntityTickRegion.java:61)
    at nallar.tickthreading.minecraft.tickregion.TickRegion.run(TickRegion.java:36)
    at nallar.tickthreading.minecraft.ThreadManager$DelayableRunnable.run(ThreadManager.java:188)
    at nallar.tickthreading.minecraft.ThreadManager$1.run(ThreadManager.java:40)
    at nallar.tickthreading.util.FakeServerThread.run(FakeServerThread.java:16)
Caused by: java.lang.NullPointerException
    at com.denr01.dropprotect.Handlers.onCustomDropItemStack(Handlers.java:103)
    at com.gmail.zariust.otherdrops.drop.DropType.drop(DropType.java:198)
    at com.gmail.zariust.otherdrops.drop.ItemDrop.performDrop(ItemDrop.java:118)
    at com.gmail.zariust.otherdrops.drop.DropType.dropLocal(DropType.java:134)
    at com.gmail.zariust.otherdrops.drop.DropType.drop(DropType.java:101)
    at com.gmail.zariust.otherdrops.event.DropRunner.run(DropRunner.java:134)
    at com.gmail.zariust.otherdrops.OtherDrops.scheduleDrop(OtherDrops.java:438)
    at com.gmail.zariust.otherdrops.OtherDrops.performDrop(OtherDrops.java:273)
    at com.gmail.zariust.otherdrops.listener.OdEntityListener.onEntityDeath(OdEntityListener.java:69)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:435)
    ... 28 more