Why doesn't this work?

Help and Feedback Scripting Support
1

function updateres(ret)
local sel = nil
for _,v in pairs(ui.CatResults:GetChildren()) do
if v:IsA(“ImageLabel”) and v.Name ~= “BlankFrame” then
v:Destroy()
end
end
for _,v in pairs(ret) do
local new = ui.CatBlank:Clone()
new.Name = v[1]
new.Button.Image = “http://www.roblox.com/Thumbs/Asset.ashx?width=110&height=110&assetId=”…v[3]
new.Button.ID.Value = v[3]
new.Button.MouseButton1Click:Connect(function()
ui.CatID = v[3]
ui.CatName = v[1]
if sel ~= nil then
sel.ImageColor3 = Color3.fromRGB(255,255,255)
sel.BorderPixel.ImageColor3 = Color3.fromRGB(150,150,150)
end
new.ImageColor3 = Color3.fromRGB(170, 170, 255)
new.BorderPixel.ImageColor3 = Color3.fromRGB(100, 100, 150)
sel = new
end)
new.Visible = true
new.Parent = ui.CatResults
end
ui.CatID = 0
ui.CatOther = Color3.fromRGB(255,255,255)
end

local list = {
[“Category”] = “Accessories”,
[“PageNumber”] = 1
}

local ret = gevs.Items:InvokeServer(list)
updateres(ret)

error: invalid argument #1 to ‘pairs’ (table expected, got nil)
This is part of a longer script, the error is the line in bold. I’m not that great at scripting - someone else made these scripts for me but this was the only line showing an error.

any help would be appreciated

2

Since ret is nil at that point, you must be calling updateres with a nil value as the first parameter. You can see where updateres gets called in the case where it throws by just looking at the call stack in the Output window where the errors also get printed