Lua NPC setCallback don't receive creature id.

[maxilos]

Hello everyone!
I have problem with recieving creature id on farewell and creature disappear callback in lua function.

Here is my lua code:

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

local playersQueue = {}
local actualPlayer = 0
local nextPlayer = 0

local function queueService(cid)
    for k,v in pairs(playersQueue) do
        if v == cid then
            table.remove(playersQueue, k)
            print('remove')
        else
            print(cid .. ' not found in queue')
        end
    end
  
    if actualPlayer == cid then
        actualPlayer = 0
    end
  
    if #playersQueue > 0 and actualPlayer == 0 then
        nextPlayer = playersQueue[1]
        table.remove(playersQueue, 1)
        local player = Player(nextPlayer)
        npcHandler:say("Thanks for waiting " .. player:getName() .. "!", nextPlayer)
        actualPlayer = nextPlayer
        nextPlayer = 0
    end
  
    return true
end

local function greetCallback(cid)
    if #playersQueue < 1 and actualPlayer == 0 then
        npcHandler:setMessage(MESSAGE_GREET, "Welcome |PLAYERNAME|!")
        actualPlayer = cid
    else
        npcHandler:setMessage(MESSAGE_GREET, "Welcome |PLAYERNAME|! I'm already busy. I add you to queue. Please wait for your turn.")
        table.insert(playersQueue, cid)
    end
    return true
end

local function creatureSayCallback(cid, type, msg)
    local player = Player(cid)
  
    if msgcontains(msg, "queueCount") then
        npcHandler:say("Queue count is: " .. #playersQueue, cid)
    elseif msgcontains(msg, "queueContent") then
        for k,v in pairs(playersQueue) do
            selfSay(k .. ' => ' .. v, cid)
        end
    end
end

local function farewellCallback(cid)
    queueService(cid)
    npcHandler:setMessage(MESSAGE_FAREWELL, "Good bye |PLAYERNAME|. See you next time!")
    return true
end

local function disappearCallback(cid)
    queueService(cid)
    npcHandler:setMessage(MESSAGE_WALKAWAY, "Good bye. See you next time!")
    return true
end

npcHandler:setCallback(CALLBACK_GREET, greetCallback)
npcHandler:setCallback(CALLBACK_MESSAGE_DEFAULT, creatureSayCallback)
npcHandler:setCallback(CALLBACK_FAREWELL, farewellCallback)
npcHandler:setCallback(CALLBACK_CREATURE_DISAPPEAR, disappearCallback)

npcHandler:addModule(FocusModule:new())

When I talk 'bye' to NPC , I get a bug in the console:

Lua Script Error: [Npc interface]
data/npc/scripts/TestNPC.lua:onThink
data/npc/scripts/TestNPC.lua:20: attempt to concatenate local 'cid' (a nil value)
stack traceback:
        [C]: in function '__concat'
        data/npc/scripts/TestNPC.lua:20: in function 'queueService'
        data/npc/scripts/TestNPC.lua:64: in function 'callback'
        data/npc/lib/npcsystem/npchandler.lua:335: in function 'unGreet'
        data/npc/lib/npcsystem/npchandler.lua:524: in function 'onThink'
        data/npc/scripts/TestNPC.lua:8: in function <data/npc/scripts/TestNPC.lua:8>

Only when i logged out function work fine. Why it's happedns? Maybe i not see some bug in code. Please help me. I'm using TFS 1.1 on linux.

 

[maxilos]

I found a solution.
For others who have same problem:

1. Open npchandler.lua
2. Find 335 and 553 line and
replace this:

if callback == nil or callback() then

to this:

if callback == nil or callback(cid) then