Can't even use this ability.
[15:51:35 ERROR]: Could not pass event PlayerToggleSneakEvent to ProjectKorra v1.8.4
org.bukkit.event.EventException
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.PlayerConnection.a(PlayerConnection.java:1412) [spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.PacketPlayInEntityAction.a(SourceFile:43) [spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.PacketPlayInEntityAction.a(SourceFile:9) [spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.PlayerConnectionUtils$1.run(SourceFile:13) [spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_131]
at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_131]
at net.minecraft.server.v1_11_R1.SystemUtils.a(SourceFile:46) [spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:747) [spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:399) [spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:678) [spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:576) [spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_131]
Caused by: java.lang.NoSuchMethodError: com.projectkorra.projectkorra.ability.EarthAbility.isEarthbendable(Lorg/bukkit/Material;ZZZ)Z
at me.simplicitee.earthkick.EarthKick.launchKick(EarthKick.java:176) ~[?:?]
at me.simplicitee.earthkick.EarthKick.<init>(EarthKick.java:64) ~[?:?]
at me.simplicitee.earthkick.EarthKick.onSneak(EarthKick.java:279) ~[?:?]
at sun.reflect.GeneratedMethodAccessor78.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:302) ~[spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
... 15 more