Created Instance Doesn't Exist

[taavZSub (Leonart)]

I am making an obby. As usual I have special parts like Kill Bricks, Conveyors, Trampolines and Spawnpoints.

Today I have issues with spawnpoints. The issue is not detecting the spawnpoint.
You will already read the comments in below, script says the ObjectValue I created using Instance.new() in another script doesn’t exist.

---

BasisModule: ModuleScript - Handling Spawnpoint

local BasisTypes = {
	["Spawnpoint"] = function(Part: BasePart)
		Part.Touched:Connect(function(OtherPart)
			if not table.find(BodyPartsR6, OtherPart.Name) then return end

			local Humanoid = OtherPart.Parent:FindFirstChild("Humanoid")
			if Humanoid and Humanoid.Health > 0 then
				print("Touched spawnpoint and humanoid found.")
				
				local Player = Players:GetPlayerFromCharacter(Humanoid.Parent)
				if ServerStorage.Spawnpoints:FindFirstChild(Player.UserId) then
					ServerStorage.Spawnpoints[Player.UserId].Value = Part
					
					--> Value is never set because there is this if statement.
					--> As you can see, above line says that Player.UserId doesn't exist
					--> in the ServerStorage.Spawnpoints
				end
			end
		end)
	end
}

function module.HandleBasisInstance(BasisInstance: Instance)
	if BasisInstance:IsA("BasePart") then
		local Attribute = BasisInstance:GetAttribute("BasisType")
		if Attribute and BasisTypes[Attribute] then
			BasisTypes[Attribute](BasisInstance)
		end
	end
end

---

MainScript: Script - Calling HandleBasisInstance()

_Workspace.DescendantAdded:Connect(function(Descendant: Instance)
	if Descendant:IsA("BasePart") then
		BasisModule.HandleBasisInstance(Descendant)
	end
end)

---

PlayerScript: Script - Teleport player to spawnpoint

Players.PlayerAdded:Connect(function(Player)
	local Leaderstats = Instance.new("Folder", Player)
	Leaderstats.Name = "leaderstats"
	
	--Initialize other leaderstats instances
	--If available get data from DataStore
	
	local Spawnpoint = Instance.new("ObjectValue", ServerStorage.Spawnpoints)
	Spawnpoint.Name = Player.UserId
	
	--> As you can see above Player.UserId is created in ServerStorage.Spawnpoints
	
	--Update leaderstats when spawnpoint changed
	--CharacterAdded events
	
	Player.CharacterAppearanceLoaded:Connect(function(Character)
		if Spawnpoint.Value ~= nil then --> Always returns nil because value is never set
			Character:PivotTo(Spawnpoint.Value.CFrame + Vector3.new(0, 4, 0))
		end
	end)
end)

[taavZSub (Leonart)]

Update: I published the game to Roblox and it worked with zero issues. That was strange but I already lived this problem before.