Error with saving script?

I need help with s=a script that is supposed to save player data. I keep getting this Error

" Cannot write to DataStore from studio if API access is not enabled. Enable it by going to the Game Settings page."

I could not find API access in the settings.

This is the ServerScriptService Script

local PlayerStatManager = require(game.ServerStorage.ModuleScript)

This is ServerStorage Script

local PlayerStatManager = {}

local DataStoreService = game:GetService('DataStoreService')
local playerData = DataStoreService:GetDataStore('PlayerData')

local AUTOSAVE_INTERVAL = 60

local sessionData = {}
 
function PlayerStatManager:ChangeStat(player, statName, changeValue)
	sessionData[player][statName] = sessionData[player][statName] + changeValue
end

local function getPlayerData(player)	
	return playerData:GetAsync(player.UserId)
end
 
local function savePlayerData(player)	
	playerData:SetAsync(player.UserId, sessionData[player])
end

local function setupPlayerData(player)
	local data = playerData:GetAsync(player.UserId)
	if not data then
		sessionData[player] = {Money = 0}		
		savePlayerData(player)
	else
		sessionData[player] = data
	end
end

local function autosave()
	while wait(AUTOSAVE_INTERVAL) do
		for player, data in pairs(sessionData) do
			savePlayerData(player)
		end
	end
end

game.Players.PlayerAdded:connect(setupPlayerData)

game.Players.PlayerRemoving:connect(function(player)
	savePlayerData(player)
	sessionData[player] = nil
end)

spawn(autosave)

return PlayerStatManager