Yardım dungeoninfo quest hata

function split(str, delim, maxNb)
    if str == nil then return str end
    if string.find(str, delim) == nil then return { str } end
    if maxNb == nil or maxNb < 1 then maxNb = 0 end
    local result = {}
    local pat = "(.-)" .. delim .. "()"
    local nb = 0
    local lastPos
    for part, pos in string.gfind(str, pat) do
        nb = nb + 1
        result[nb] = part
        lastPos = pos
        if nb == maxNb then break end
    end
    if nb ~= maxNb then result[nb + 1] = string.sub(str, lastPos) end
    return result
end