I've a problem with a EntityDeathEvent

Why my code doesn't work, the console give me a "NoSuchFieldError: Elder_Guardian" when I kill it. The error is in the if statement (I think). Here's the code:

Code:

}else if (event.getEntityType() == EntityType.ELDER_GUARDIAN){
            String completed3 = plugin.getPlayersData().getString((new StringBuilder("Players.")).append(p.getName()).append(".missionsCompleted").append(".ElderGuardianDeath").toString());
           
            if(completed3.equalsIgnoreCase("false")){
                plugin.getPlayersData().set((new StringBuilder("Players.")).append(p.getName()).append(".missionsCompleted").append(".ElderGuardianDeath").toString(), true);
                plugin.savePlayersData();
               
                p.playSound(lctn, Sound.ENTITY_PLAYER_LEVELUP, 1, 10);
                p.sendMessage(ChatColor.GOLD+"Felicidades, has conseguido el logro matar al Elder Guardian, toma aquí tu recompensa");
                esm.addStoredEnchant(Enchantment.OXYGEN, 3, true);
                book.setItemMeta(esm);
                p.getInventory().addItem(book);
                p.closeInventory();
                p.updateInventory();
            }

Thanks in advance.

 

@timtower I'm developing and testing on 1.10.2

 

@brunodm99

Can I see the full error please?
~ post it in pastebin.

try getEntity.getType() instead.. I have no clue what the difference is though
no difference... show us the error.

 

Tomorrow I send you de full error, I go to bed. Here's later.

@mehboss
Here's the log http://pastebin.com/i9nK4VXW.
If I change the line
"if (event.getEntityType() == EntityType.ELDER_GUARDIAN){" (the plugin doesn't work)
by
"if (event.getEntityType() == EntityType.CHICKEN){" (the plugin works)

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

There is another error at:

Code:

Caused by: java.lang.NullPointerException
    at com.bruno.pluginmc.PlayerListener.onBossDeath(PlayerListener.java:33) ~[?:?]

&

Code:

Caused by: java.lang.NoSuchFieldError: ELDER_GUARDIAN
    at com.bruno.pluginmc.PlayerListener.onBossDeath(PlayerListener.java:66) ~[?:?]

 

The first error is solved, but the suchFieldError no. If I use instanceof, eclipse give me a that "EntityType.ELDER_GUARDIAN cannot be resolved to a type".

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