Could not pass event mcMMOXpGainEvent to mcMMO-Towny v1.0.0

[MCDoctor]

Hello, been recieving this error spamming my console for hours now. Was wondering how to fix this.
Im running a remote server on linux and am using the following plugins.
CoreProtect, WorldEdit, Questioner, Essentials, GroupManager, WorldBorder, HolographicDisplays, BungeePlayerCounter, WorldGuard, EssentialsXMPP, EssentailsProtect, Autocast, EssentialsGeoIP, EssentialsAntiBuild, mcMMO, Vault, EssentialsSpawn, AutoCast, Towny Jobs, Brewery, TownyChat, mcMMO-Towny.
(Thats exactly what comes up when I do /plugins)

Here is the Error from my console.

[23:24:44 ERROR]: Could not pass event McMMOPlayerXpGainEvent to mcMMO-Towny v1.0.0
org.bukkit.event.EventException
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:310) ~[spigot_server.jar:git-Spigot-db6de12-18fbb24]
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot_server.jar:git-Spigot-db6de12-18fbb24]
at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot_server.jar:git-Spigot-db6de12-18fbb24]
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot_server.jar:git-Spigot-db6de12-18fbb24]
at com.gmail.nossr50.util.EventUtils.handleXpGainEvent(EventUtils.java:144) [mcMMO.jar:?]
at com.gmail.nossr50.datatypes.player.McMMOPlayer.applyXpGain(McMMOPlayer.java:523) [mcMMO.jar:?]
at com.gmail.nossr50.datatypes.player.McMMOPlayer.beginUnsharedXpGain(McMMOPlayer.java:491) [mcMMO.jar:?]
at com.gmail.nossr50.datatypes.player.McMMOPlayer.beginXpGain(McMMOPlayer.java:481) [mcMMO.jar:?]
at com.gmail.nossr50.skills.SkillManager.applyXpGain(SkillManager.java:29) [mcMMO.jar:?]
at com.gmail.nossr50.skills.woodcutting.WoodcuttingManager.woodcuttingBlockCheck(WoodcuttingManager.java:66) [mcMMO.jar:?]
at com.gmail.nossr50.listeners.BlockListener.onBlockBreak(BlockListener.java:192) [mcMMO.jar:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_65]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_65]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_65]
at java.lang.reflect.Method.invoke(Method.java:497) ~[?:1.8.0_65]
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) [spigot_server.jar:git-Spigot-db6de12-18fbb24]
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) [spigot_server.jar:git-Spigot-db6de12-18fbb24]
at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot_server.jar:git-Spigot-db6de12-18fbb24]
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot_server.jar:git-Spigot-db6de12-18fbb24]
at net.minecraft.server.v1_8_R3.PlayerInteractManager.breakBlock(PlayerInteractManager.java:286) [spigot_server.jar:git-Spigot-db6de12-18fbb24]
at net.minecraft.server.v1_8_R3.PlayerInteractManager.a(PlayerInteractManager.java:215) [spigot_server.jar:git-Spigot-db6de12-18fbb24]
at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:637) [spigot_server.jar:git-Spigot-db6de12-18fbb24]
at net.minecraft.server.v1_8_R3.PacketPlayInBlockDig.a(SourceFile:40) [spigot_server.jar:git-Spigot-db6de12-18fbb24]
at net.minecraft.server.v1_8_R3.PacketPlayInBlockDig.a(SourceFile:10) [spigot_server.jar:git-Spigot-db6de12-18fbb24]
at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13) [spigot_server.jar:git-Spigot-db6de12-18fbb24]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_65]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_65]
at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:44) [spigot_server.jar:git-Spigot-db6de12-18fbb24]
at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:715) [spigot_server.jar:git-Spigot-db6de12-18fbb24]
at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:374) [spigot_server.jar:git-Spigot-db6de12-18fbb24]
at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:654) [spigot_server.jar:git-Spigot-db6de12-18fbb24]
at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:557) [spigot_server.jar:git-Spigot-db6de12-18fbb24]
at java.lang.Thread.run(Thread.java:745) [?:1.8.0_65]
Caused by: java.lang.NoSuchMethodError: com.gmail.nossr50.events.experience.McMMOPlayerXpGainEvent.getXpGainReason()Lcom/gmail/nossr50/datatypes/skills/XPGainReason;
at org.mcmmo.mcmmotowny.listeners.ExperienceListener.onPlayerXpGainEvent(ExperienceListener.java:20) ~[?:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_65]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_65]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_65]
at java.lang.reflect.Method.invoke(Method.java:497) ~[?:1.8.0_65]
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot_server.jar:git-Spigot-db6de12-18fbb24]
... 32 more