Why is remote event being fired by how many players are in the game?

I'm trying to make a map voting system that uses remote events to get what the player votes for. But for example, if there are 3 players in the game, the server will receive the event 3 times.

Server Script:

script.MapVoting:FireAllClients(MapsGot)

script.MapVoting.OnServerEvent:Connect(function(Player, VotedMap)
	print("Event received") -- Prints by how many people are in the game
	for i,v in pairs(script.MapVotes:GetChildren()) do
		if v.Name == VotedMap then
			v.Value = v.Value + 1
			break
		end
	end
end)

Local Script:

game.Workspace.RoundController.MapVoting.OnClientEvent:Connect(function(MapTable)
	script.Parent.Frame.Map1.Map1.MouseButton1Click:Connect(function()
		print("Fire Server") -- Prints only once
		game.Workspace.RoundController.MapVoting:FireServer(MapTable[1].Name)
	end)
	script.Parent.Frame.Map2.Map1.MouseButton1Click:Connect(function()
		game.Workspace.RoundController.MapVoting:FireServer(MapTable[2].Name)
	end)
	script.Parent.Frame.Map3.Map1.MouseButton1Click:Connect(function()
		game.Workspace.RoundController.MapVoting:FireServer(MapTable[3].Name)
	end)
end)

Why does this happen? I've tried using debounces on both the server and the client but the problem isn't fixed. Thanks!

whoopsie daisy i put the onserverevent function inside a player added function :p