Scripts resetting to print("Hello World!") upon game loading?

So everything works fine in studio but nothing works in game. When I look at errors in game on client it says "Hello World!" a bunch. So I am guessing the scripts reset when I load in to the default code? And then on the server side it says hello world once and game script timeout. The game script that timed out is here:

local pos = Vector3.new(0,5,0)

game.Workspace.ChildAdded:Connect(function(child)
    if child:FindFirstChild("Humanoid") then
        local cloud = game.ServerStorage.Cloud:Clone()
            while true do
                cloud.Parent = game.Workspace
        cloud.Position = child.Head.Position + pos
            if child.Humanoid.Health == 0 then
                cloud:Destroy()
                    wait()
            end
        end
    end
end)

The script just makes this cloud thats inside the character follow it above its head. I would like any optimizations and a possible fix. Also if you need screen shots I can provide them. Thanks!