Lua Problem firstitems.lua

[Skibka]

[2:44:02.217] [Error - CreatureScript Interface]
[2:44:02.217] data/creaturescripts/scripts/firstitems.luanLogin
[2:44:02.217] Description:
[2:44:02.217] data/creaturescripts/scripts/firstitems.lua:55: bad argument #1 to 'maxn' (table expected, got nil)
[2:44:02.217] stack traceback:
[2:44:02.217] [C]: in function 'maxn'
[2:44:02.217] data/creaturescripts/scripts/firstitems.lua:55: in function <data/creaturescripts/scripts/firstitems.lua:53>

here's my firstitems.lua script : http://pastebin.com/m9F8mFgb

 

[Infernum]

local firstItems = {
    [1] = {2173, 2525, 2428, 2124, 2460, 2478, 2643},
    [2] = {2173, 2525, 2428, 2124, 2460, 2478, 2643},
    [3] = {2173, 2525, 2428, 2124, 2460, 2478, 2643},
    [4] = {2173, 2525, 2428, 2124, 2460, 2478, 2643}
}

local bagItems = {
    {id = 2160, amt = 1},
    {id = 2554, amt = 1},
    {id = 2120, amt = 1}, 
    {id = 7618, amt = 1},
    {id = 2383, amt = 1}
}

function onLogin(cid)
    if getPlayerStorageValue(cid, 30001) == -1 then
        local t = firstItems[getPlayerVocation(cid)]
        local bag = doPlayerAddItem(cid, 10518, 1)
        for i = 1, #t do
            doPlayerAddItem(cid, t[i])
        end
        for i = 1, #bagItems do
            doAddContainerItem(bag, bagItems[i].id, bagItems[i].amt)
        end
        doPlayerAddItem(cid, 2465, 1)
        setPlayerStorageValue(cid, 30001, 1)
    end
    return true
end