Expected then got player, but where do i even put the "then" ?

Where do I need to then it doesn't make any sense at all. I Already put a then.

code:

wait(1)
local button = script.Parent
local RequestServer = game.ReplicatedStorage:WaitForChild("RemoteEvents").Buy_Sign
local coins = game.Players.LocalPlayer:WaitForChild("leaderstats").Coins
local plrgui = game.Players.LocalPlayer:WaitForChild("PlayerGui")
local image = plrgui.Bought_Sign.Image
local sound = script.Parent.sound
local dzz = script.Parent:WaitForChild("dzz")
local mess = script.Parent.Parent.Parent.Parent.plr_has_item.TextLabel
    local plrname = game.Players.LocalPlayer.Name
    local Plr = game.Players[plrname]
local running = false
button.Activated:Connect(function()
    if coins.Value >=5 then
        wait(0.5)
    RequestServer:FireServer()
    sound:Play()
    image:TweenPosition(UDim2.new(0, 0,0.826, 0),"Out","Bounce",1)
    wait(3)
    image:TweenPosition(UDim2.new(-1, 0,0.826, 0),"Out","Bounce",1)
    wait(1)
    elseif
        wait(0.2)
        --animate text and play sound
        plr.achievements.Has_Hammer.Value == true then
            mess.Visible = true
            local text = "You already have this item!" 
            for i  = 1,# text do
                mess.Text = string.sub(text,1,i)
                            wait(0.000001)
            end
        dzz:Play()
            wait(1)
            mess.Visible = false
            end
end)