Why is my chat script having this error message?

I'm making this custom chat thingy and my script got a weird error. here is my script: (its in serverscrptservice)

    player.Chatted:connect(function(msg)
  local    m = Instance.new("Hint")
m.Parent = game.Workspace
m.Text = (msg)
wait(1)
if player.Chatted:connect(function(msg) 
m:Destroy()
end)
    end) -- expected 'then' got end
end)

I changed end) to end but it is still not working so I changed it back. any ideas? Thanks for reading! I also added then to it but then it said

Expected identifier got 'then'

You can't use conditional statements (if and then statements) with functions. Also, what the error meant is your forgot to put a "then." Here's a better version of your script:

player.Chatted:connect(function(msg)
if not workspace:FindFirstChild("PlayerMessageHint") then
local m = Instance.new("Hint", workspace)
m.Name = "PlayerMessageHint"
m.Text = msg
elseif workspace:FindFirstChild("PlayerMessageHint") then
workspace:FindFirstChild("PlayerMessageHint").Text = msg
end
end)