whats the problem with this script?

[donkeyg]

//======Name========================================
// Daily Monster Hunt
//======Version=====================================
// 1.2
//======Author(s)===================================
// Sandbox
//======Comments====================================
// This NPC allows your player to hunt a random amount
// of a random monster, within a random time
// *randomception!*
// If the player successfully hunts the monster
// within the time limit, he'll receive a reward!
//======Credits=====================================
// KeyWorld, nanakiwurtz, NeoMind, Kido
// Thanks for helping me out guize!
//==================================================




prontera,143,174,5 script Questboard 857,{
mes .Npc_Name$;
if(Hunter) {
mes "You have killed ^880000"+HuntCount+"^000000/^0000FF"+Amt


+"^000000 "+getmonsterinfo(Hunt,0)+"s, keep it up!";
close;
}
if(gettimetick(2) < HuntDelay) {
mes "You can only do this quest once a day!";
close;
}


mes "Hello, do you want to take on the Monster Hunting Challenge?","I will give you a random time limit to kill a random amount of a monster, If you manage to kill them within the given time, you'll receive a reward!"; 
if(select("Bring it on!:How about no?")==2) {
mes .Npc_Name$;
mes "Fine!";
close;
}


next;
mes .Npc_Name$;
Hunt = .Mob_List[rand(getarraysize(.Mob_List))];
Time = rand(100,180); //Timer
Amt = rand (50,100); //Amount of mob to hunt
Hunter++;


mes "You have to hunt ^0000FF"+Amt+" "+getmonsterinfo(Hunt,0)+"^000000 in ^AA0000"+Time+"^000000 seconds!";
next;
mes .Npc_Name$;
mes "Go go go!";
close2;
showdigit Time,3;
HuntDelay = gettimetick(2)+86400; //Once a day only.
HuntStart = gettimetick(2)+Time;
sleep2 1000*Time;
if(Hunter) dispbottom strnpcinfo(1)+": I'm sorry, you didn't make it!";
HuntStart = 0; //Reset all variables
Hunt = 0;
Hunter = 0;
HuntCount = 0;
Time = 0;
Amt = 0;
end;




//----------Config----------


OnInit:
.Npc_Name$ = "[^0000FF NPC ^000000]";
setarray .Mob_List[0],1002,1007,1063; //Mobs to hunt. Default: Poring, Fabre, Lunatic
.Reward = 7179; //Reward ID
.RewAmt = 1; //Reward Amount
end;


OnNPCKillEvent:
if(Hunter > 0) {
if(gettimetick(2) < HuntStart) {
if(killedrid == Hunt) {
HuntCount++;
dispbottom "You have killed "+HuntCount+"/"+Amt+" "+getmonsterinfo(Hunt,0)+"s, keep it up!";
if(HuntCount >= Amt) {
dispbottom strnpcinfo(1)+": Congratulations! You did it!";
getitem .Reward,.RewAmt;
HuntStart = 0;
Hunt = 0;
Hunter = 0;
HuntCount = 0;
Time = 0;
Amt = 0;
showdigit 1,3;
}
}
}
}
close;
} 




OnInit:
    waitingroom "Daily Hunting Quest",0;
    end;


}

but it shows this error always
 

 

[Warning]: Incorrect use of 'close' command! (source:Questboard / path:npc/basicnpc/questboard.txt)

[Warning]: Incorrect use of 'close' command! (source:Questboard / path:npc/basicnpc/questboard.txt)

[Warning]: Incorrect use of 'close' command! (source:Questboard / path:npc/basicnpc/questboard.txt)

[Warning]: Incorrect use of 'close' command! (source:Questboard / path:npc/basicnpc/questboard.txt)

[Warning]: Incorrect use of 'close' command! (source:Questboard / path:npc/basicnpc/questboard.txt)

 

 

[Missingno]

Remove the close; command from your OnNPCKillEvent label; it is being used without a message dialogue, subsequently throwing the error. A more suitable command would be end;.