ERRO NPC NÃO CONVERSA

<?xml version="1.0" encoding="UTF-8"?>
<npc name="Mark" script="default.lua" walkinterval="0" floorchange="0" speed="0">
<health now="150" max="150"/>
<look type="606" head="91" body="114" legs="86" feet="0"/>
<parameters>
<parameter key="message_greet" value="Olá amigo consumidor, eu tenho artigos para lhe ajudar em sua jornada, diga {trade} para ver as ofertas, ou {sell mais nome do item} para me vender algum loot!!"/>
<parameter key="message_farewell" value="Good bye!"/>
<parameter key="message_idletimeout" value="Good bye!"/>
<parameter key="message_walkaway" value="Good bye!"/>
<parameter key="module_shop" value="1"/>
<parameter key="shop_buyable" value= "poke ball,2394,500;
great ball,2391,2000;
super ball,2393,5000;
ultra ball,2392,13000;
small potion,12347,500;
great potion,12348,1000;
ultra potion,12346,2200;
hyper potion,12345,5000;
full restore,12343,10000;
revive,12344,25000;
medicine,12349,1000;"/>
<parameter key="shop_sellable" value= "electric box,12176,2000;
sandbag,12177,2000;
comb,12179,5000;
fur,12181,3300;
ruby,12188,8000;
essence of fire,12162,50;
small stone,12337,50;
pot of moss bug,12171,200;
screw,12164,50;
straw,2694,50;
water gems,12161,50;
remains of magikarp,12334,100;
teeth,12175,200;
bottle of poison,12165,50;
water pendant,12170,200;
feather,12200,500;
seed,12163,50;
pair of leaves,12155,200;
apple bite,12173,200;
bat wing,12182,400;
pot of lava,12152,400;
fire pendant,12286,200;
bug venom,12185,400;
bug antenna,12184,400;
venom pendant,12282,200;
pot of venom,12288,400;
iron bracelet,12192,50;
ice orb,12201,500;
gosme,12202,500;
darkness gem,12745,50;
bug gosme,13783,50;
enchanted gem,13785,50;
horn,13789,1000;"/>
</parameters>
</npc>

local keywordHandler = KeywordHandler:new()
local npcHandler = NpcHandler:new(keywordHandler)
NpcSystem.parseParameters(npcHandler)

function onCreatureAppear(cid)            npcHandler:onCreatureAppear(cid)            end
function onCreatureDisappear(cid)        npcHandler:onCreatureDisappear(cid)            end
function onCreatureSay(cid, type, msg)        npcHandler:onCreatureSay(cid, type, msg)        end
function onThink()                npcHandler:onThink()                    end

npcHandler:addModule(FocusModule:new())