InsertService not inserting a model ingame?

I have this function I'm using to handle the case of Roblox failing to insert the model, since it's very integral to the game.

The place this is being run in is a group place and the model is free. The code works in test servers and in 'Play Mode', but doesn't work in an actual server.

local function loadAssetUntilWorks(id, maxTries)
	local model,success,message
	local i = 0

	--Sets the maxTries to -1 (making the loop infinite) if maxtries isn't
	--specified or is less than 0
	if not maxTries then
		maxTries = -1
	elseif maxTries < 0 then
		maxTries = -1
	end

	print("Settings - maxTries: " .. maxTries)

	--Makes sure the amount of tries isn't 0
	if maxTries ~= 0 then
		repeat
			print("Settings - On try numbah " .. i)
			--Keeps trying until successful and then returns the model	
			
			success,message = pcall(function()
				model = InsertService:LoadAsset(id) --The problem line
			end)
			if success then
				return model
			else
				i = i+1
				warn("Whoopsie: " .. message)
				wait(WAIT_TIME_BEFORE_SECOND_ATTEMPT)
			end
		until i==maxTries
	else
		return
	end
end