How can i make a group invite button for in game groups?

I made a gui to create your own group within a game and I need to make a invite button so other people can invite another player to that group, and i tested this script but it doesn't seem to work, and the error seems to say playergui is not a valid member of player.

local plr = game.Players.LocalPlayer
local stats = plr:WaitForChild("leaderstats")
local group = stats:WaitForChild("Affiliation")
local money = stats:WaitForChild("Money")

local nameofgroup = script.Parent.Parent:WaitForChild("NameGroup")
local otherplayer = script.Parent.Parent:WaitForChild("InvitePlayerName")

script.Parent.MouseButton1Click:connect(function()
    for i,v in pairs(game.Players:GetPlayers()) do
        if v.Name == otherplayer.Text then
            local pgui = v:WaitForChild("PlayerGui")
            local groupframe = pgui:WaitForChild("GroupGUI"):WaitForChild("GroupFrame")
            local joinframe = groupframe:WaitForChild("JoinFrame")
            local clone = game.ReplicatedStorage["JoinGroup"]:Clone()
            for j,k in pairs(clone:GetChildren()) do
                if k.Name == "Name" then
                    k.Text = group.Value
                end
                clone.Parent = joinframe
            end
        end
    end
end)