(I need help)When button clicked it finds player username then posts on discord webhook?

local url = "" --webhook link--
local http = game:GetService("HttpService")
local player = game.Players.LocalPlayer
script.Parent.MouseButton1Click:Connect(function(player)
local data = {
	['embeds'] = {{
		['title'] = "Button clicked",
		['description'] = player.Name .. " has clicked the button",
		['url'] = "https://www.roblox.com/users/".. player.UserId .. "/profile"

	}}
}

local finaldata = http:JSONEncode(data)
http:PostAsync(url, finaldata)

end)

Edit: My Error