[12:26:10 ERROR]: Could not pass event EntityRegainHealthEvent to MMOItems v4.4
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:310) ~[BlockSurvi1.9.4.jar:git-Spigot-c6871e2-0cd0397]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[BlockSurvi1.9.4.jar:git-Spigot-c6871e2-0cd0397]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [BlockSurvi1.9.4.jar:git-Spigot-c6871e2-0cd0397]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [BlockSurvi1.9.4.jar:git-Spigot-c6871e2-0cd0397]
        at net.minecraft.server.v1_9_R2.EntityLiving.heal(EntityLiving.java:735) [BlockSurvi1.9.4.jar:git-Spigot-c6871e2-0cd0397]
        at net.minecraft.server.v1_9_R2.EntityHorse.n(EntityHorse.java:676) [BlockSurvi1.9.4.jar:git-Spigot-c6871e2-0cd0397]
        at net.minecraft.server.v1_9_R2.EntityLiving.m(EntityLiving.java:1784) [BlockSurvi1.9.4.jar:git-Spigot-c6871e2-0cd0397]
        at net.minecraft.server.v1_9_R2.EntityInsentient.m(EntityInsentient.java:249) [BlockSurvi1.9.4.jar:git-Spigot-c6871e2-0cd0397]
        at net.minecraft.server.v1_9_R2.EntityHorse.m(EntityHorse.java:704) [BlockSurvi1.9.4.jar:git-Spigot-c6871e2-0cd0397]
        at net.minecraft.server.v1_9_R2.World.entityJoinedWorld(World.java:1617) [BlockSurvi1.9.4.jar:git-Spigot-c6871e2-0cd0397]
        at net.minecraft.server.v1_9_R2.World.g(World.java:1592) [BlockSurvi1.9.4.jar:git-Spigot-c6871e2-0cd0397]
        at net.minecraft.server.v1_9_R2.World.tickEntities(World.java:1426) [BlockSurvi1.9.4.jar:git-Spigot-c6871e2-0cd0397]
        at net.minecraft.server.v1_9_R2.WorldServer.tickEntities(WorldServer.java:632) [BlockSurvi1.9.4.jar:git-Spigot-c6871e2-0cd0397]
        at net.minecraft.server.v1_9_R2.MinecraftServer.D(MinecraftServer.java:797) [BlockSurvi1.9.4.jar:git-Spigot-c6871e2-0cd0397]
        at net.minecraft.server.v1_9_R2.DedicatedServer.D(DedicatedServer.java:399) [BlockSurvi1.9.4.jar:git-Spigot-c6871e2-0cd0397]
        at net.minecraft.server.v1_9_R2.MinecraftServer.C(MinecraftServer.java:665) [BlockSurvi1.9.4.jar:git-Spigot-c6871e2-0cd0397]
        at net.minecraft.server.v1_9_R2.MinecraftServer.run(MinecraftServer.java:564) [BlockSurvi1.9.4.jar:git-Spigot-c6871e2-0cd0397]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_191]
Caused by: java.lang.NoSuchMethodError: org.bukkit.entity.Entity.getHeight()D
        at net.Indyuce.mmoitems.comp.holograms.HolographicDisplaysPlugin.displayIndicator(HolographicDisplaysPlugin.java:19) ~[MMOItems%20Legacy.jar:?]
        at net.Indyuce.mmoitems.listener.InGameIndicators.a(InGameIndicators.java:40) ~[MMOItems%20Legacy.jar:?]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_191]
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_191]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_191]
        at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_191]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[BlockSurvi1.9.4.jar:git-Spigot-c6871e2-0cd0397]
        ... 17 more