Ошибка плагина GWCore

Could not pass event EntityDamageByEntityEvent to GWCore v2.4.1
org.bukkit.event.EventException
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:305) ~[server.jar:git-Spigot-c3c767f-33d5de3]
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[server.jar:git-Spigot-c3c767f-33d5de3]
at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [server.jar:git-Spigot-c3c767f-33d5de3]
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [server.jar:git-Spigot-c3c767f-33d5de3]
at org.bukkit.craftbukkit.v1_8_R1.event.CraftEventFactory.callEvent(CraftEventFactory.java:85) [server.jar:git-Spigot-c3c767f-33d5de3]
at org.bukkit.craftbukkit.v1_8_R1.event.CraftEventFactory.callEntityDamageEvent(CraftEventFactory.java:538) [server.jar:git-Spigot-c3c767f-33d5de3]
at org.bukkit.craftbukkit.v1_8_R1.event.CraftEventFactory.handleEntityDamageEvent(CraftEventFactory.java:451) [server.jar:git-Spigot-c3c767f-33d5de3]
at org.bukkit.craftbukkit.v1_8_R1.event.CraftEventFactory.handleLivingEntityDamageEvent(CraftEventFactory.java:570) [server.jar:git-Spigot-c3c767f-33d5de3]
at net.minecraft.server.v1_8_R1.EntityLiving.d(EntityLiving.java:1096) [server.jar:git-Spigot-c3c767f-33d5de3]
at net.minecraft.server.v1_8_R1.EntityHuman.d(EntityHuman.java:860) [server.jar:git-Spigot-c3c767f-33d5de3]
at net.minecraft.server.v1_8_R1.EntityLiving.damageEntity(EntityLiving.java:737) [server.jar:git-Spigot-c3c767f-33d5de3]
at net.minecraft.server.v1_8_R1.EntityHuman.damageEntity(EntityHuman.java:801) [server.jar:git-Spigot-c3c767f-33d5de3]
at net.minecraft.server.v1_8_R1.EntityPlayer.damageEntity(EntityPlayer.java:486) [server.jar:git-Spigot-c3c767f-33d5de3]
at net.minecraft.server.v1_8_R1.EntityHuman.attack(EntityHuman.java:1002) [server.jar:git-Spigot-c3c767f-33d5de3]
at net.minecraft.server.v1_8_R1.EntityPlayer.attack(EntityPlayer.java:1051) [server.jar:git-Spigot-c3c767f-33d5de3]
at net.minecraft.server.v1_8_R1.PlayerConnection.a(PlayerConnection.java:1312) [?:git-Spigot-c3c767f-33d5de3]
at net.minecraft.server.v1_8_R1.PacketPlayInUseEntity.a(SourceFile:52) [server.jar:git-Spigot-c3c767f-33d5de3]
at net.minecraft.server.v1_8_R1.PacketPlayInUseEntity.a(SourceFile:11) [server.jar:git-Spigot-c3c767f-33d5de3]
at net.minecraft.server.v1_8_R1.PacketHandleTask.run(SourceFile:13) [server.jar:git-Spigot-c3c767f-33d5de3]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_275]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_275]
at net.minecraft.server.v1_8_R1.MinecraftServer.z(MinecraftServer.java:696) [server.jar:git-Spigot-c3c767f-33d5de3]
at net.minecraft.server.v1_8_R1.DedicatedServer.z(DedicatedServer.java:316) [server.jar:git-Spigot-c3c767f-33d5de3]
at net.minecraft.server.v1_8_R1.MinecraftServer.y(MinecraftServer.java:634) [server.jar:git-Spigot-c3c767f-33d5de3]
at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:537) [server.jar:git-Spigot-c3c767f-33d5de3]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_275]
Caused by: java.lang.NoSuchMethodError: org.bukkit.entity.Player.sendTitle(Ljava/lang/String;Ljava/lang/StringV
at ru.leymooo.antirelog.utils.TitlesUtils.sendTitles(TitlesUtils.java:25) ~[?:?]
at ru.leymooo.antirelog.utils.PvPUtils.startPvp(PvPUtils.java:24) ~[?:?]
at ru.leymooo.antirelog.utils.PvPUtils.checkPlayerOrStartPvp(PvPUtils.java:43) ~[?:?]
at ru.leymooo.antirelog.listeners.EntityEvents.onDamageByEntity(EntityEvents.java:34) ~[?:?]
at sun.reflect.GeneratedMethodAccessor100.invoke(Unknown Source) ~[?:?]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_275]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_275]
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:301) ~[server.jar:git-Spigot-c3c767f-33d5de3]
... 25 more