Remote Event works in studio but not in game?

--Server script placed in ServerScriptService

local repStorage = game:GetService("ReplicatedStorage")
local remote = repStorage:WaitForChild("Remote")

remote.OnServerEvent:Connect(function(player)
    print("SERVER")
    local MoonArcTemplate = Instance.new("Part")
    MoonArcTemplate.Name = "MoonArc";
    MoonArcTemplate.Anchored = true;
    MoonArcTemplate.CanCollide = false;
    MoonArcTemplate.Transparency = 1;
    MoonArcTemplate.Size = Vector3.new(1,1,1);  

    local moonDecal = Instance.new("Decal",MoonArcTemplate)
    moonDecal.Texture = "http://www.roblox.com/asset/?id=12345678"

    MoonArcTemplate.Position = player.Character["UpperTorso"].Position
end)

--Local script inside a text button

local repStorage = game:GetService("ReplicatedStorage")
local remote = repStorage:WaitForChild("Remote")

script.Parent.MouseButton1Click:Connect(function()
    remote:FireServer()
end)

This works on Roblox studio but when I run it online, the remote event does not even fire( Print("SERVER") doesn't even run)