Could not pass event PlayerDeathEvent

Hai der.
I'm trying to code a deathmessage plugin but everytime a player dies, I get an error which I normally should not get because there are no eclipse errors + the message come's in chat.
Can someone help me please?
ERROR:

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[20:52:21 ERROR]: Could not pass event PlayerDeathEvent to Deathmessage v1.0
org.bukkit.event.EventException
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.ja
va:302) ~[spigot.jar:git-Spigot-1649]
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.jav
a:62) ~[spigot.jar:git-Spigot-1649]
at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.j
ava:514) [spigot.jar:git-Spigot-1649]
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.j
ava:499) [spigot.jar:git-Spigot-1649]
at org.bukkit.craftbukkit.v1_7_R4.event.CraftEventFactory.callPlayerDeat
hEvent(CraftEventFactory.java:397) [spigot.jar:git-Spigot-1649]
at net.minecraft.server.v1_7_R4.EntityPlayer.die(EntityPlayer.java:386)
[spigot.jar:git-Spigot-1649]
at net.minecraft.server.v1_7_R4.EntityLiving.damageEntity(EntityLiving.j
ava:745) [spigot.jar:git-Spigot-1649]
at net.minecraft.server.v1_7_R4.EntityHuman.damageEntity(EntityHuman.jav
a:765) [spigot.jar:git-Spigot-1649]
at net.minecraft.server.v1_7_R4.EntityPlayer.damageEntity(EntityPlayer.j
ava:465) [spigot.jar:git-Spigot-1649]
at net.minecraft.server.v1_7_R4.EntitySlime.b_(EntitySlime.java:202) [sp
igot.jar:git-Spigot-1649]
at net.minecraft.server.v1_7_R4.EntityHuman.d(EntityHuman.java:452) [spi
got.jar:git-Spigot-1649]
at net.minecraft.server.v1_7_R4.EntityHuman.e(EntityHuman.java:444) [spi
got.jar:git-Spigot-1649]
at net.minecraft.server.v1_7_R4.EntityLiving.h(EntityLiving.java:1409) [
spigot.jar:git-Spigot-1649]
at net.minecraft.server.v1_7_R4.EntityHuman.h(EntityHuman.java:164) [spi
got.jar:git-Spigot-1649]
at net.minecraft.server.v1_7_R4.EntityPlayer.i(EntityPlayer.java:258) [s
pigot.jar:git-Spigot-1649]
at net.minecraft.server.v1_7_R4.PlayerConnection.a(PlayerConnection.java
:357) [spigot.jar:git-Spigot-1649]
at net.minecraft.server.v1_7_R4.PacketPlayInFlying.a(SourceFile:137) [sp
igot.jar:git-Spigot-1649]
at net.minecraft.server.v1_7_R4.PacketPlayInPosition.handle(PacketPlayIn
Position.java:35) [spigot.jar:git-Spigot-1649]
at net.minecraft.server.v1_7_R4.NetworkManager.a(NetworkManager.java:186
) [spigot.jar:git-Spigot-1649]
at net.minecraft.server.v1_7_R4.ServerConnection.c(ServerConnection.java
:81) [spigot.jar:git-Spigot-1649]
at net.minecraft.server.v1_7_R4.MinecraftServer.v(MinecraftServer.java:7
34) [spigot.jar:git-Spigot-1649]
at net.minecraft.server.v1_7_R4.DedicatedServer.v(DedicatedServer.java:2
89) [spigot.jar:git-Spigot-1649]
at net.minecraft.server.v1_7_R4.MinecraftServer.u(MinecraftServer.java:5
84) [spigot.jar:git-Spigot-1649]
at net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java
:490) [spigot.jar:git-Spigot-1649]
at net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:6
28) [spigot.jar:git-Spigot-1649]
Caused by: java.lang.NullPointerException
at me.dubstepprins.deathmessage.events.PlayerKill.onPlayerDeath(PlayerKi
ll.java:13) ~[?:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0
_25]
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0
_25]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1
.8.0_25]
at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_25]
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.ja
va:298) ~[spigot.jar:git-Spigot-1649]
... 24 more

Code:

Code:java

@EventHandler
public void onPlayerDeath(PlayerDeathEvent c) {
if(c.getDeathMessage().contains("was blown up by Creeper")) {
c.setDeathMessage(ChatColor.GREEN + c.getEntity().getName() + ChatColor.GOLD + " was blown up by " + ChatColor.RED + "CREEPER" + ChatColor.GOLD + "!");
}
if(c.getDeathMessage().contains("was shot by Skeleton")) {
c.setDeathMessage(ChatColor.GREEN + c.getEntity().getName() + ChatColor.GOLD + " was shot by " + ChatColor.RED + "SKELETON" + ChatColor.GOLD + "!");
}
if(c.getDeathMessage().contains("was slain by Spider")) {
c.setDeathMessage(ChatColor.GREEN + c.getEntity().getName() + ChatColor.GOLD + " was killed by " + ChatColor.RED + "SPIDER" + ChatColor.GOLD + "!");
}
if(c.getDeathMessage().contains("was slain by Zombie")) {
c.setDeathMessage(ChatColor.GREEN + c.getEntity().getName() + ChatColor.GOLD + " was killed by " + ChatColor.RED + "ZOMBIE" + ChatColor.GOLD + "!");
}
if(c.getDeathMessage().contains("was slain by Slime")) {
c.setDeathMessage(ChatColor.GREEN + c.getEntity().getName() + ChatColor.GOLD + " was killed by " + ChatColor.RED + "SLIME" + ChatColor.GOLD + "!");
}
if(c.getDeathMessage().contains("was fireballed by Ghast")) {
c.setDeathMessage(ChatColor.GREEN + c.getEntity().getName() + ChatColor.GOLD + " was fireballed by " + ChatColor.RED + "GHAST" + ChatColor.GOLD + "!");
}
if(c.getDeathMessage().contains("was slain by Zombie Pigman")) {
c.setDeathMessage(ChatColor.GREEN + c.getEntity().getName() + ChatColor.GOLD + " was killed by " + ChatColor.RED + "ZOMBIE PIGMAN" + ChatColor.GOLD + "!");
}
if(c.getDeathMessage().contains("was slain by Enderman")) {
c.setDeathMessage(ChatColor.GREEN + c.getEntity().getName() + ChatColor.GOLD + " was killed by " + ChatColor.RED + "ENDERMAN" + ChatColor.GOLD + "!");
}
if(c.getDeathMessage().contains("was slain by Cave Spider")) {
c.setDeathMessage(ChatColor.GREEN + c.getEntity().getName() + ChatColor.GOLD + " was killed by " + ChatColor.RED + "CAVE SPIDER" + ChatColor.GOLD + "!");
}
if(c.getDeathMessage().contains("was slain by Silverfish")) {
c.setDeathMessage(ChatColor.GREEN + c.getEntity().getName() + ChatColor.GOLD + " was killed by " + ChatColor.RED + "SILVERFISH" + ChatColor.GOLD + "!");
}
if(c.getDeathMessage().contains("was burnt to a crisp whilst fighting Blaze")) {
c.setDeathMessage(ChatColor.GREEN + c.getEntity().getName() + ChatColor.GOLD + " was burnt to a crisp by " + ChatColor.RED + "BLAZE" + ChatColor.GOLD + "!");
}
if(c.getDeathMessage().contains("was slain by Magma Cube")) {
c.setDeathMessage(ChatColor.GREEN + c.getEntity().getName() + ChatColor.GOLD + " was killed by " + ChatColor.RED + "MAGMA CUBE" + ChatColor.GOLD + "!");
}
if(c.getDeathMessage().contains("was killed by Witch using magic")) {
c.setDeathMessage(ChatColor.GREEN + c.getEntity().getName() + ChatColor.GOLD + " was killed by " + ChatColor.RED + "WITCH" + ChatColor.GOLD + " using magic" + ChatColor.GOLD + "!");
}
if(c.getDeathMessage().contains("was slain by Wolf")) {
c.setDeathMessage(ChatColor.GREEN + c.getEntity().getName() + ChatColor.GOLD + " was killed by " + ChatColor.RED + "WOLF" + ChatColor.GOLD + "!");
}
}
}

Thanks.

 

You could use death cause instead of checking if the death message contains something,
What is line 13 in that class?
Also I see spigot @,..,@

 

mine-care Spigot is because I couldn't run bukkit otherwise DMCA stuff but line 13:

Code:

c.setDeathMessage(ChatColor.GREEN + c.getEntity().getName() + ChatColor.GOLD + " was blown up by " + ChatColor.RED + "CREEPER" + ChatColor.GOLD + "!");

And how would I find the cause of death? (I mean c.(insterstuff here))

 

DubstepPrins
So, I'm going to guess that c.getEntity() can return null, do some null checks:

Code:

if(c.getEntity() instanceof Player) {
// Safely cast Player to entity
// Death message stuff
}