[18:06:08] [Server thread/ERROR]: Could not pass event EntityDamageByEntityEvent to MMOItems v4.7.1
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302) ~[PaperSpigot-1.8.8.jar:git-PaperSpigot-"4c7641d"]
	at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:78) ~[PaperSpigot-1.8.8.jar:git-PaperSpigot-"4c7641d"]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[PaperSpigot-1.8.8.jar:git-PaperSpigot-"4c7641d"]
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:517) [PaperSpigot-1.8.8.jar:git-PaperSpigot-"4c7641d"]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:502) [PaperSpigot-1.8.8.jar:git-PaperSpigot-"4c7641d"]
	at org.bukkit.craftbukkit.v1_8_R3.event.CraftEventFactory.callEvent(CraftEventFactory.java:87) [PaperSpigot-1.8.8.jar:git-PaperSpigot-"4c7641d"]
	at org.bukkit.craftbukkit.v1_8_R3.event.CraftEventFactory.callEntityDamageEvent(CraftEventFactory.java:553) [PaperSpigot-1.8.8.jar:git-PaperSpigot-"4c7641d"]
	at org.bukkit.craftbukkit.v1_8_R3.event.CraftEventFactory.handleEntityDamageEvent(CraftEventFactory.java:466) [PaperSpigot-1.8.8.jar:git-PaperSpigot-"4c7641d"]
	at org.bukkit.craftbukkit.v1_8_R3.event.CraftEventFactory.handleNonLivingEntityDamageEvent(CraftEventFactory.java:604) [PaperSpigot-1.8.8.jar:git-PaperSpigot-"4c7641d"]
	at org.bukkit.craftbukkit.v1_8_R3.event.CraftEventFactory.handleNonLivingEntityDamageEvent(CraftEventFactory.java:590) [PaperSpigot-1.8.8.jar:git-PaperSpigot-"4c7641d"]
	at net.minecraft.server.v1_8_R3.EntityArmorStand.damageEntity(EntityArmorStand.java:381) [PaperSpigot-1.8.8.jar:git-PaperSpigot-"4c7641d"]
	at net.minecraft.server.v1_8_R3.EntityHuman.attack(EntityHuman.java:1002) [PaperSpigot-1.8.8.jar:git-PaperSpigot-"4c7641d"]
	at net.minecraft.server.v1_8_R3.EntityPlayer.attack(EntityPlayer.java:1086) [PaperSpigot-1.8.8.jar:git-PaperSpigot-"4c7641d"]
	at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:1382) [PaperSpigot-1.8.8.jar:git-PaperSpigot-"4c7641d"]
	at net.minecraft.server.v1_8_R3.PacketPlayInUseEntity.a(SourceFile:52) [PaperSpigot-1.8.8.jar:git-PaperSpigot-"4c7641d"]
	at net.minecraft.server.v1_8_R3.PacketPlayInUseEntity.a(SourceFile:11) [PaperSpigot-1.8.8.jar:git-PaperSpigot-"4c7641d"]
	at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13) [PaperSpigot-1.8.8.jar:git-PaperSpigot-"4c7641d"]
	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_201]
	at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_201]
	at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:44) [PaperSpigot-1.8.8.jar:git-PaperSpigot-"4c7641d"]
	at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:774) [PaperSpigot-1.8.8.jar:git-PaperSpigot-"4c7641d"]
	at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:378) [PaperSpigot-1.8.8.jar:git-PaperSpigot-"4c7641d"]
	at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:713) [PaperSpigot-1.8.8.jar:git-PaperSpigot-"4c7641d"]
	at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:616) [PaperSpigot-1.8.8.jar:git-PaperSpigot-"4c7641d"]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_201]
Caused by: java.lang.NoSuchFieldError: ENTITY_PLAYER_ATTACK_CRIT
	at net.Indyuce.mmoitems.api.AttackResult.applyEffects(AttackResult.java:95) ~[?:?]
	at net.Indyuce.mmoitems.api.item.weapon.Weapon.targetedAttack(Weapon.java:90) ~[?:?]
	at net.Indyuce.mmoitems.listener.ItemUse.b(ItemUse.java:129) ~[?:?]
	at sun.reflect.GeneratedMethodAccessor186.invoke(Unknown Source) ~[?:?]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_201]
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_201]
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:300) ~[PaperSpigot-1.8.8.jar:git-PaperSpigot-"4c7641d"]
	... 24 more