Problem z zabijeniem graczy na arenie oraz komendą kill

[thekacper 86]

Jak w temacie, gracze nie mogą się zabijać nigdzie pomimo włączonego PVP w server.propierties, nawet z konsoli komendą /kill nie mogę zabić gracza ? Jest permisja na PVP? i jeszcze lista pluginów oraz komunikat, który się wyświetla po napisaniu komendy /kill w konsoli:
[13:43:07 INFO]: CONSOLE issued server command: /kill YanderePL
[13:43:07 ERROR]: Command kill failed:
java.lang.NoSuchMethodError: org.bukkit.event.entity.EntityDamageEvent.<init>(Lorg/bukkit/entity/Entity;Lorg/bukkit/event/entity/EntityDamageEvent$DamageCause;I)V at com.earth2me.essentials.commands.Commandkill.updatePlayer(Commandkill.java:37) ~[Essentials-2.x-SNAPSHOT.jar:?] at com.earth2me.essentials.commands.EssentialsLoopCommand.loopOnlinePlayers(EssentialsLoopCommand.java:132) ~[Essentials-2.x-SNAPSHOT.jar:?] at com.earth2me.essentials.commands.Commandkill.run(Commandkill.java:26) ~[Essentials-2.x-SNAPSHOT.jar:?] at com.earth2me.essentials.commands.EssentialsCommand.run(EssentialsCommand.java:192) ~[Essentials-2.x-SNAPSHOT.jar:?] at com.earth2me.essentials.Essentials.onCommandEssentials(Essentials.java:523) [Essentials-2.x-SNAPSHOT.jar:?] at com.earth2me.essentials.Essentials.onCommand(Essentials.java:402) [Essentials-2.x-SNAPSHOT.jar:?] at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) [craftbukkit-1.11.2.jar:git-Bukkit-a552117] at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:140) [craftbukkit-1.11.2.jar:git-Bukkit-a552117] at org.bukkit.craftbukkit.v1_11_R1.CraftServer.dispatchCommand(CraftServer.java:629) [craftbukkit-1.11.2.jar:git-Bukkit-a552117] at org.bukkit.craftbukkit.v1_11_R1.CraftServer.dispatchServerCommand(CraftServer.java:615) [craftbukkit-1.11.2.jar:git-Bukkit-a552117] at net.minecraft.server.v1_11_R1.DedicatedServer.aM(DedicatedServer.java:397) [craftbukkit-1.11.2.jar:git-Bukkit-a552117] at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:361) [craftbukkit-1.11.2.jar:git-Bukkit-a552117] at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:650) [craftbukkit-1.11.2.jar:git-Bukkit-a552117] at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:554) [craftbukkit-1.11.2.jar:git-Bukkit-a552117] at java.lang.Thread.run(Thread.java:745) [?:1.8.0_112]

coś takiego, z góry dziękuję za pomoc

[MarcinWieczorek]

Stare Essentials.