---- Minecraft Crash Report ----
// There are four lights!

Time: 9/14/19 2:55 PM
Description: Ticking entity

java.lang.IllegalArgumentException: Cannot drop air
	at com.google.common.base.Preconditions.checkArgument(Preconditions.java:122)
	at net.minecraft.server.v1_14_R1.EntityItem.setItemStack(EntityItem.java:391)
	at net.minecraft.server.v1_14_R1.EntityItem.<init>(EntityItem.java:38)
	at org.bukkit.craftbukkit.v1_14_R1.CraftWorld.dropItem(CraftWorld.java:588)
	at org.bukkit.craftbukkit.v1_14_R1.event.CraftEventFactory.callEntityDeathEvent(CraftEventFactory.java:715)
	at net.minecraft.server.v1_14_R1.EntityLiving.d(EntityLiving.java:1365)
	at net.minecraft.server.v1_14_R1.EntityLiving.die(EntityLiving.java:1322)
	at net.minecraft.server.v1_14_R1.EntityLiving.damageEntity(EntityLiving.java:1169)
	at net.minecraft.server.v1_14_R1.EntityLiving.af(EntityLiving.java:1756)
	at net.minecraft.server.v1_14_R1.Entity.entityBaseTick(Entity.java:400)
	at net.minecraft.server.v1_14_R1.EntityLiving.entityBaseTick(EntityLiving.java:236)
	at net.minecraft.server.v1_14_R1.EntityInsentient.entityBaseTick(EntityInsentient.java:210)
	at net.minecraft.server.v1_14_R1.Entity.tick(Entity.java:346)
	at net.minecraft.server.v1_14_R1.EntityLiving.tick(EntityLiving.java:2217)
	at net.minecraft.server.v1_14_R1.EntityInsentient.tick(EntityInsentient.java:273)
	at net.minecraft.server.v1_14_R1.WorldServer.entityJoinedWorld(WorldServer.java:568)
	at net.minecraft.server.v1_14_R1.World.a(World.java:745)
	at net.minecraft.server.v1_14_R1.WorldServer.doTick(WorldServer.java:344)
	at net.minecraft.server.v1_14_R1.MinecraftServer.b(MinecraftServer.java:1069)
	at net.minecraft.server.v1_14_R1.DedicatedServer.b(DedicatedServer.java:396)
	at net.minecraft.server.v1_14_R1.MinecraftServer.a(MinecraftServer.java:971)
	at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:816)
	at java.lang.Thread.run(Thread.java:748)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Thread: Server thread
Stacktrace:
	at com.google.common.base.Preconditions.checkArgument(Preconditions.java:122)
	at net.minecraft.server.v1_14_R1.EntityItem.setItemStack(EntityItem.java:391)
	at net.minecraft.server.v1_14_R1.EntityItem.<init>(EntityItem.java:38)
	at org.bukkit.craftbukkit.v1_14_R1.CraftWorld.dropItem(CraftWorld.java:588)
	at org.bukkit.craftbukkit.v1_14_R1.event.CraftEventFactory.callEntityDeathEvent(CraftEventFactory.java:715)
	at net.minecraft.server.v1_14_R1.EntityLiving.d(EntityLiving.java:1365)
	at net.minecraft.server.v1_14_R1.EntityLiving.die(EntityLiving.java:1322)
	at net.minecraft.server.v1_14_R1.EntityLiving.damageEntity(EntityLiving.java:1169)
	at net.minecraft.server.v1_14_R1.EntityLiving.af(EntityLiving.java:1756)
	at net.minecraft.server.v1_14_R1.Entity.entityBaseTick(Entity.java:400)
	at net.minecraft.server.v1_14_R1.EntityLiving.entityBaseTick(EntityLiving.java:236)
	at net.minecraft.server.v1_14_R1.EntityInsentient.entityBaseTick(EntityInsentient.java:210)
	at net.minecraft.server.v1_14_R1.Entity.tick(Entity.java:346)
	at net.minecraft.server.v1_14_R1.EntityLiving.tick(EntityLiving.java:2217)
	at net.minecraft.server.v1_14_R1.EntityInsentient.tick(EntityInsentient.java:273)
	at net.minecraft.server.v1_14_R1.WorldServer.entityJoinedWorld(WorldServer.java:568)

-- Entity being ticked --
Details:
	Entity Type: minecraft:cow (net.minecraft.server.v1_14_R1.EntityCow)
	Entity ID: 60
	Entity Name: Cow
	Entity's Exact location: 85.20, -98.02, 74.98
	Entity's Block location: World: (85,-99,74), Chunk: (at 5,-7,10 in 5,4; contains blocks 80,0,64 to 95,255,79), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Entity's Momentum: -0.08, -3.22, 0.02
	Entity's Passengers: []
	Entity's Vehicle: ~~ERROR~~ NullPointerException: null
Stacktrace:
	at net.minecraft.server.v1_14_R1.World.a(World.java:745)
	at net.minecraft.server.v1_14_R1.WorldServer.doTick(WorldServer.java:344)

-- Affected level --
Details:
	All players: 1 total; [EntityPlayer['Preful'/53, l='void', x=88.30, y=74.00, z=71.61](Preful at 88.2967629142774,74.0,71.6107768558808)]
	Chunk stats: ServerChunkCache: 2025
	Level dimension: minecraft:void
	Level name: void
	Level seed: -1337154289654076633
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options: {}
	Level spawn location: World: (78,75,75), Chunk: (at 14,4,11 in 4,4; contains blocks 64,0,64 to 79,255,79), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Level time: 13414302 game time, 13430466 day time
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 75790 (now: false), thunder time: 6088 (now: true)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
Stacktrace:
	at net.minecraft.server.v1_14_R1.MinecraftServer.b(MinecraftServer.java:1069)
	at net.minecraft.server.v1_14_R1.DedicatedServer.b(DedicatedServer.java:396)
	at net.minecraft.server.v1_14_R1.MinecraftServer.a(MinecraftServer.java:971)
	at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:816)
	at java.lang.Thread.run(Thread.java:748)