[23:05:34 ERROR]: Could not pass event PlayerDeathEvent to Guilds v1.0
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:292) ~[server.jar:1.8.8]
        at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:78) ~[server.jar:1.8.8]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:88) ~[server.jar:1.8.8]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:507) ~[server.jar:1.8.8]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:492) ~[server.jar:1.8.8]
        at org.bukkit.craftbukkit.v1_8_R3.event.CraftEventFactory.callPlayerDeathEvent(CraftEventFactory.java:387) ~[server.jar:1.8.8]
        at net.minecraft.server.v1_8_R3.EntityPlayer.die(EntityPlayer.java:435) ~[server.jar:1.8.8]
        at net.minecraft.server.v1_8_R3.EntityLiving.damageEntity(EntityLiving.java:841) ~[server.jar:1.8.8]
        at net.minecraft.server.v1_8_R3.EntityHuman.damageEntity(EntityHuman.java:803) ~[server.jar:1.8.8]
        at net.minecraft.server.v1_8_R3.EntityPlayer.damageEntity(EntityPlayer.java:514) ~[server.jar:1.8.8]
        at net.minecraft.server.v1_8_R3.EntityHuman.attack(EntityHuman.java:1018) ~[server.jar:1.8.8]
        at net.minecraft.server.v1_8_R3.EntityPlayer.attack(EntityPlayer.java:1096) ~[server.jar:1.8.8]
        at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:1356) ~[server.jar:1.8.8]
        at net.minecraft.server.v1_8_R3.PacketPlayInUseEntity.a(PacketPlayInUseEntity.java:41) ~[server.jar:1.8.8]
        at net.minecraft.server.v1_8_R3.PacketPlayInUseEntity.a(PacketPlayInUseEntity.java:7) ~[server.jar:1.8.8]
        at net.minecraft.server.v1_8_R3.PlayerConnectionUtils.lambda$ensureMainThread$0(PlayerConnectionUtils.java:6) ~[server.jar:1.8.8]
        at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) ~[?:?]
        at java.base/java.util.concurrent.FutureTask.run(Unknown Source) ~[?:?]
        at net.minecraft.server.v1_8_R3.MinecraftServer.processConnection(MinecraftServer.java:756) ~[server.jar:1.8.8]
        at net.minecraft.server.v1_8_R3.MinecraftServer.lambda$startTickloop$1(MinecraftServer.java:605) ~[server.jar:1.8.8]
        at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:?]
        at java.base/java.util.concurrent.FutureTask.runAndReset(Unknown Source) [?:?]
        at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source) [?:?]
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:?]
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?:?]
        at java.base/java.lang.Thread.run(Unknown Source) [?:?]
Caused by: java.lang.NullPointerException
        at com.jelizy.guilds.listener.KillStreakEvent.onDeath(KillStreakEvent.java:27) ~[Gildie.jar:?]
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:?]
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:?]
        at java.base/java.lang.reflect.Method.invoke(Unknown Source) ~[?:?]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:290) ~[server.jar:1.8.8]