error when enter in the afterlife

Additional weapon on MoTD

#include maps\mp\_utility;
#include maps\mp\zombies_zm_equipment;
#include common_scripts\utility;
#include maps\mp\gametypes_zm\_hud_util;
#include maps\mp\gametypes_zm\_hud_message;
#include maps\mp\zombies\_zm_utility;
#include maps\mp\zombies\_zm;

init()
{ 
    level.start_weapon = "fiveseven_zm";
    level.perk_purchase_limit = 9;
    level thread onPlayerConnect();
    level thread drawZombiesCounter();
}

onPlayerConnect()
{
    
    for(;;)
    {
        level waittill("connected", player);
        player thread healthPlayer();
        player thread killCount();
        player thread onPlayerSpawned();
        player thread showScore();
        player thread startRound();
    }
}

startRound()
{
	for(;;)
	{
		level waittill( "start_of_round", player);
		if(true)
		{
		doPerks();
		break;
		}
	}	
	
}
onPlayerSpawned()
{
    self endon("disconnect");
    level endon("game_ended");

    for(;;)
    {
        
        self waittill("spawned_player", player);
    }
}



healthPlayer()

{
	self endon("disconnect");
	self.healthText = createFontString("Objective" , 1.2); //Fixed
    self.healthText setPoint("CENTER", "BOTTOM", -100, 20);
    while(true)
    	{
          if(self.health == 100)
          {
                self.maxhealth = 130;
                
          }
     	  self.healthText setText( "^2HP: ^7"+ self.health);
          wait 0.1;
          }
}

drawZombiesCounter()
{
    level.zombiesCounter = createServerFontString("Objective" , 1.3);
    level.zombiesCounter setPoint("CENTER", "BOTTOM", -160, 20);
    level thread updateZombiesCounter(); 
}

updateZombiesCounter()
{
    oldZombiesCount = get_current_zombie_count();
    while(true)
    {   	
        newZombiesCount = get_current_zombie_count();
        wait 0.4;
        if(oldZombiesCount != newZombiesCount)
        {
            level thread updateZombiesCounter();
            return;
        }
        else
        {
        	if(newZombiesCount != 0)
        		level.zombiesCounter.label = &"Zumbis: ^1";
        	else
        		level.zombiesCounter.label = &"Zumbis: ^5";
        	level.zombiesCounter setValue(newZombiesCount);
        }
    }
}

killCount()
{
	i = 0;

	while( i < level.players.size)
	{
		if(level.players[i] == self)
		{
			self thread killCountSelf(level.players[i]);
		}
		i++;
		wait 0.2;
	}
}

killCountSelf(thisPlayer)
{
	self.kill = createFontString("small" , 1.2); //Fixed
	self.kill setPoint("CENTER", "BOTTOM", -40, 20);
	while(true)
	{
		self.kill.label = &"^3Baixas:  ^7";
		self.kill setValue(thisPlayer.kills);
		wait 0.4;
	}
}

showScore()
{
	self.scoreShow = createFontString("small" , 1.2); //Fixed
	self.scoreShow setPoint("CENTER", "BOTTOM", 40, 20);
	while(true)
	{
		self.scoreShow.label = &"^6Score:  ^7";
		self.scoreShow setValue(self.score);
		wait 0.25;
	}
}

doPerks()

{

	self clearperks();

	self setperk("specialty_additionalprimaryweapon");

	self iPrintln("Perma Mule Kick Added :)");

}