could not pass player join event to plugin (using spigot 1.10.2 and latest version of the plugin)

[ItsChriszz]

[17:28:02 INFO]: UUID of player AsasinTreepig is b8820979-b459-4f3b-a085-73228230bc1b
[17:28:03 ERROR]: Could not pass event PlayerJoinEvent to GriefPrevention v15.3
org.bukkit.event.EventException
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot.jar:git-Spigot-570526c-c1b529e]
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot.jar:git-Spigot-570526c-c1b529e]
at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot.jar:git-Spigot-570526c-c1b529e]
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot.jar:git-Spigot-570526c-c1b529e]
at net.minecraft.server.v1_10_R1.PlayerList.onPlayerJoin(PlayerList.java:333) [spigot.jar:git-Spigot-570526c-c1b529e]
at net.minecraft.server.v1_10_R1.PlayerList.a(PlayerList.java:159) [spigot.jar:git-Spigot-570526c-c1b529e]
at net.minecraft.server.v1_10_R1.LoginListener.b(LoginListener.java:144) [spigot.jar:git-Spigot-570526c-c1b529e]
at net.minecraft.server.v1_10_R1.LoginListener.E_(LoginListener.java:54) [spigot.jar:git-Spigot-570526c-c1b529e]
at net.minecraft.server.v1_10_R1.NetworkManager.a(NetworkManager.java:233) [spigot.jar:git-Spigot-570526c-c1b529e]
at net.minecraft.server.v1_10_R1.ServerConnection.c(ServerConnection.java:140) [spigot.jar:git-Spigot-570526c-c1b529e]
at net.minecraft.server.v1_10_R1.MinecraftServer.D(MinecraftServer.java:827) [spigot.jar:git-Spigot-570526c-c1b529e]
at net.minecraft.server.v1_10_R1.DedicatedServer.D(DedicatedServer.java:400) [spigot.jar:git-Spigot-570526c-c1b529e]
at net.minecraft.server.v1_10_R1.MinecraftServer.C(MinecraftServer.java:668) [spigot.jar:git-Spigot-570526c-c1b529e]
at net.minecraft.server.v1_10_R1.MinecraftServer.run(MinecraftServer.java:567) [spigot.jar:git-Spigot-570526c-c1b529e]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_101]
Caused by: java.lang.NoSuchMethodError: org.bukkit.entity.Player.setPortalCooldown(I)V
at me.ryanhamshire.GriefPrevention.PlayerEventHandler.onPlayerJoin(PlayerEventHandler.java:766) ~[?:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_101]
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_101]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_101]
at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_101]
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302) ~[spigot.jar:git-Spigot-570526c-c1b529e]
... 14 more

[RoboMWM]

latest version of the plugin

No you aren't

Anyways, you didn't read the update notes. Duplicate of #16