Solved How to fix console error?

I have a problem with my code. I have event on kill player and i have error when i use /kill or suicide. How am i can fix this?

Code:

Code:

    @EventHandler
    public void Kill(PlayerDeathEvent e){
        Player p = e.getEntity().getKiller();
        UUID uuid = p.getUniqueId();
        if (e.getEntity().getKiller() != null) {
            addKills(uuid,1);
        }
        updateScoreboard(p);
    }

My Error:

ERROR (open) ERROR (close)

[19:04:51 ERROR]: Could not pass event PlayerDeathEvent to msql v1
org.bukkit.event.EventException
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:310) ~[spigot.jar:git-Spigot-e4d4710-e1ebe52]
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot.jar:git-Spigot-e4d4710-e1ebe52]
at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot.jar:git-Spigot-e4d4710-e1ebe52]
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot.jar:git-Spigot-e4d4710-e1ebe52]
at org.bukkit.craftbukkit.v1_8_R3.event.CraftEventFactory.callPlayerDeathEvent(CraftEventFactory.java:396) [spigot.jar:git-Spigot-e4d4710-e1ebe52]
at net.minecraft.server.v1_8_R3.EntityPlayer.die(EntityPlayer.java:417) [spigot.jar:git-Spigot-e4d4710-e1ebe52]
at org.bukkit.craftbukkit.v1_8_R3.entity.CraftLivingEntity.setHealth(CraftLivingEntity.java:87) [spigot.jar:git-Spigot-e4d4710-e1ebe52]
at me.testmsql.PrisonPlayer.CommandKill.onCommand(CommandKill.java:13) [msqltest.jar:?]
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) [spigot.jar:git-Spigot-e4d4710-e1ebe52]
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) [spigot.jar:git-Spigot-e4d4710-e1ebe52]
at org.bukkit.craftbukkit.v1_8_R3.CraftServer.dispatchCommand(CraftServer.java:641) [spigot.jar:git-Spigot-e4d4710-e1ebe52]
at net.minecraft.server.v1_8_R3.PlayerConnection.handleCommand(PlayerConnection.java:1162) [spigot.jar:git-Spigot-e4d4710-e1ebe52]
at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:997) [spigot.jar:git-Spigot-e4d4710-e1ebe52]
at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(PacketPlayInChat.java:45) [spigot.jar:git-Spigot-e4d4710-e1ebe52]
at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(PacketPlayInChat.java:1) [spigot.jar:git-Spigot-e4d4710-e1ebe52]
at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13) [spigot.jar:git-Spigot-e4d4710-e1ebe52]
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_281]
at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_281]
at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:44) [spigot.jar:git-Spigot-e4d4710-e1ebe52]
at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:715) [spigot.jar:git-Spigot-e4d4710-e1ebe52]
at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:374) [spigot.jar:git-Spigot-e4d4710-e1ebe52]
at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:654) [spigot.jar:git-Spigot-e4d4710-e1ebe52]
at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:557) [spigot.jar:git-Spigot-e4d4710-e1ebe52]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_281]
Caused by: java.lang.NullPointerException
at me.testmsql.PrisonPlayer.PrisonPlayer.Kill(PrisonPlayer.java:147) ~[?:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_281]
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_281]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_281]
at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_281]
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot.jar:git-Spigot-e4d4710-e1ebe52]
... 23 more
[19:04:51 INFO]: 22X22 died

 

How to make check on if not a killer?

 

It's doesn't work. I have error in my console when i use this

 

I don't know how to make check on kill or suicide. Can you help me?