How to fix gui stacks? [closed]

I am making a chat gui and everything works perfectly but when 2 players spam the chat can overlap? Any way to fix this?

print("New Server")
--Variables--
Settings = {
    Enabled = true --Chat Enabled--
    ,ServerResponseColor = "Cyan" --Server Text--
    ,PlayerChatColor = "White" --Color players text is--
    ,ShowRankInGroup = {false, 7} --Example Goldgrilz7 [Leader]: Hey guys!--
    ,Admins = {"Goldgrilz7", 7}
}

--Only change anything below this line if you know what you're doing--

function cleantable() --Wipes clean all chat history auto updates players--
print("Cleaning Table")
gui = script.Chat.Chat:GetChildren()
for i = 1, #gui do
    if gui[i].Name == "Chat_Bar"
        then
        gui[i]:remove()
    end
    for i, v in pairs(game.Players:GetChildren()) do
    if v.PlayerGui:FindFirstChild("Chat") ~= nil
        then
        v.PlayerGui:FindFirstChild("Chat"):remove()
    end
    end
end
end

cleantable()

if Settings.Enabled == false
    then
    script.Chat.HideChat.Disabled = true
end

function ac(player) --Admin check
    a = false
    for i = 1, #Settings.Admins do
        if Settings.Admins[i] == player
            then
            a = true
        end
    end
    return a
end

if Settings.Enabled == true
    then
    script.Chat.HideChat.Disabled = true

function onchat(msg, player)
    wait(.05)
        admincheck = ac(player.Name)
    if msg:sub(1,3):lower() == ";sm" and admincheck == true
        then
        _G.respond(msg:sub(5))
    else if msg:sub(1,10):lower() == ";showranks" and msg:sub(11,13) ~= "off" and admincheck == true
        then
        Settings.ShowRankInGroup[1] = true
        _G.respond("Enabled Visual Chat Rank")
        else if msg:sub(1,12):lower() == ";showranksoff" and admincheck == true
        then
        Settings.ShowRankInGroup[1] = false
        _G.respond("Disabled Visual Chat Rank")
        else if msg:sub(1,8):lower() == ";groupid" and admincheck == true
        then
        Settings.ShowRankInGroup[2] = tonumber(msg:sub(9))
        _G.respond("Changed Group To"..msg:sub(9))
    else
    print(msg, player)
    p = game.Players:GetChildren()
    gui = script.Chat
        gui.Chat.Update.Disabled = false
        message = script.Chat_Bar:Clone()
        message.Text = player.Name..": "..msg
        message.TextColor3 = BrickColor.new(Settings.PlayerChatColor).Color
        if Settings.ShowRankInGroup[1] == true
                then
                message.Text = player.Name.." ["..player:GetRoleInGroup(Settings.ShowRankInGroup[2]).."]: "..msg
                end
        message.Parent = gui.Chat
        game:GetService("Debris"):AddItem(message, 120)
    for i = 1, #p do
        wait(.01)
        if p[i]:FindFirstChild("PlayerGui") ~= nil
            then
            if p[i].PlayerGui:FindFirstChild("Chat") ~= nil
                then
                p[i].PlayerGui.Chat.Chat.LUpdate.Disabled = false
            message = script.Chat_Bar:Clone()
            message.TextColor3 = BrickColor.new(Settings.PlayerChatColor).Color
            message.Text = player.Name..": "..msg
            if Settings.ShowRankInGroup[1] == true
                then
                message.Text = player.Name.." ["..player:GetRoleInGroup(Settings.ShowRankInGroup[2]).."]: "..msg
                end
            game:GetService("Debris"):AddItem(message, 120)
            message.Parent = p[i].PlayerGui.Chat.Chat
            message.TextTransparency = 1
            message.TextStrokeTransparency = 1
            end
        end
    end
    end
        end
    end
    end
end







game.Players.PlayerAdded:connect(function(player)
    player.Chatted:connect(function(msg) onchat(msg, player) end)
    _G.respond(player.Name.." Has Joined")
end)

while true do
    wait()
    for i, v in pairs(game.Players:GetChildren()) do
    if v.PlayerGui:FindFirstChild("Chat") == nil
        then
        clone = script.Chat:Clone()
        clone.Parent = v.PlayerGui
    end
    end
end
end