[16:34:28 ERROR]: Could not pass event EntityDamageEvent to HexRPG v2.3.3.1
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:310) ~[spigot.jar:git-Spigot-4af49dc-c5e9a16]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot.jar:git-Spigot-4af49dc-c5e9a16]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot.jar:git-Spigot-4af49dc-c5e9a16]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot.jar:git-Spigot-4af49dc-c5e9a16]
        at org.bukkit.craftbukkit.v1_9_R2.event.CraftEventFactory.callEvent(CraftEventFactory.java:89) [spigot.jar:git-Spigot-4af49dc-c5e9a16]
        at org.bukkit.craftbukkit.v1_9_R2.event.CraftEventFactory.callEntityDamageEvent(CraftEventFactory.java:570) [spigot.jar:git-Spigot-4af49dc-c5e9a16]
        at org.bukkit.craftbukkit.v1_9_R2.event.CraftEventFactory.handleEntityDamageEvent(CraftEventFactory.java:556) [spigot.jar:git-Spigot-4af49dc-c5e9a16]
        at org.bukkit.craftbukkit.v1_9_R2.event.CraftEventFactory.handleLivingEntityDamageEvent(CraftEventFactory.java:602) [spigot.jar:git-Spigot-4af49dc-c5e9a16]
        at net.minecraft.server.v1_9_R2.EntityLiving.damageEntity0(EntityLiving.java:1216) [spigot.jar:git-Spigot-4af49dc-c5e9a16]
        at net.minecraft.server.v1_9_R2.EntityLiving.damageEntity(EntityLiving.java:827) [spigot.jar:git-Spigot-4af49dc-c5e9a16]
        at net.minecraft.server.v1_9_R2.EntityBat.damageEntity(SourceFile:199) [spigot.jar:git-Spigot-4af49dc-c5e9a16]
        at net.minecraft.server.v1_9_R2.EntityLiving.U(EntityLiving.java:189) [spigot.jar:git-Spigot-4af49dc-c5e9a16]
        at net.minecraft.server.v1_9_R2.EntityInsentient.U(EntityInsentient.java:189) [spigot.jar:git-Spigot-4af49dc-c5e9a16]
        at net.minecraft.server.v1_9_R2.Entity.m(Entity.java:301) [spigot.jar:git-Spigot-4af49dc-c5e9a16]
        at net.minecraft.server.v1_9_R2.EntityLiving.m(EntityLiving.java:1711) [spigot.jar:git-Spigot-4af49dc-c5e9a16]
        at net.minecraft.server.v1_9_R2.EntityInsentient.m(EntityInsentient.java:249) [spigot.jar:git-Spigot-4af49dc-c5e9a16]
        at net.minecraft.server.v1_9_R2.EntityBat.m(SourceFile:110) [spigot.jar:git-Spigot-4af49dc-c5e9a16]
        at net.minecraft.server.v1_9_R2.World.entityJoinedWorld(World.java:1617) [spigot.jar:git-Spigot-4af49dc-c5e9a16]
        at net.minecraft.server.v1_9_R2.World.g(World.java:1592) [spigot.jar:git-Spigot-4af49dc-c5e9a16]
        at net.minecraft.server.v1_9_R2.World.tickEntities(World.java:1426) [spigot.jar:git-Spigot-4af49dc-c5e9a16]
        at net.minecraft.server.v1_9_R2.WorldServer.tickEntities(WorldServer.java:632) [spigot.jar:git-Spigot-4af49dc-c5e9a16]
        at net.minecraft.server.v1_9_R2.MinecraftServer.D(MinecraftServer.java:797) [spigot.jar:git-Spigot-4af49dc-c5e9a16]
        at net.minecraft.server.v1_9_R2.DedicatedServer.D(DedicatedServer.java:399) [spigot.jar:git-Spigot-4af49dc-c5e9a16]
        at net.minecraft.server.v1_9_R2.MinecraftServer.C(MinecraftServer.java:665) [spigot.jar:git-Spigot-4af49dc-c5e9a16]
        at net.minecraft.server.v1_9_R2.MinecraftServer.run(MinecraftServer.java:564) [spigot.jar:git-Spigot-4af49dc-c5e9a16]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_131]
Caused by: java.lang.NoSuchMethodError: org.bukkit.entity.Bat.setSilent(Z)V
        at me.ItsJasonn.HexRPG.Listener.EntityDamage.onEntityDamage(EntityDamage.java:89) ~[?:?]
        at sun.reflect.GeneratedMethodAccessor13.invoke(Unknown Source) ~[?:?]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_131]
        at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_131]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot.jar:git-Spigot-4af49dc-c5e9a16]
        ... 25 more