Argument 1 missing or nil?

So, I made another attempt at a Trello-API.

What I have tried to do is when you click the "Send" button, after you entered your group ID into the textBox it sends the group id and name..

Problems:

local id = script.Parent.Parent.TextFrame.TextBox

local group = game:GetService("GroupService"):GetGroupInfoAsync(tonumber(id.Text))

Full:

ap = require(script.Parent.Parent.Parent.TrelloAPI)  

local Board = ap:GetBoardID("Feedback")

local List = ap:GetListID("Recieved",Board)

local isOwner = false

local id = script.Parent.Parent.TextFrame.TextBox

local group = game:GetService("GroupService"):GetGroupInfoAsync(tonumber(id.Text))

local player = script.Parent.Parent.Parent.Parent.Parent

script.Parent.MouseButton1Down:connect(function()
	if player:IsInGroup(id.Text) and player:GetRankInGroup(id.Text) == 255 then
		isOwner = true
	else
		isOwner = false
	end
					--[Name],[Decription],[List ID]
	if isOwner == true then
		ap:AddCard("ID: "..id.Text.."; "..group.Name,"Sent by: "..game.Players.LocalPlayer.Name,List,"","top","","green")
	else
		ap:AddCard(id.Text,"Sent by: "..game.Players.LocalPlayer.Name,List,"","top","","red")
	end
	script.Parent.Parent.TextFrame.TextBox.Text = "Enter ID here..."
end)

23:27:31.685 - Argument 1 missing or nil 23:27:31.686 - Script 'Players.Player.PlayerGui.FeedbackGui.FeedBackFrame.Enter.Script', Line 11