Retrieve packages/products on web for Flutter app

I’m developing an application that should run both on platforms (iOS and Android) and web.

So far I have been able to implement the platform part of logic, being able to retrieve products and packages therefore displaying the items on a crafted layout and it calls to purchase correctly.

Now I want to do it on the web/stripe side and I can’t find any information on how to retireve the products for web from RevenueCat.

I’m trying with a code like ths but without any success on the web

await Purchases.setDebugLogsEnabled(true);
    if (GetPlatform.isAndroid) {
      await Purchases.setup(Environment.publicAndroidRCSDKKey,
          appUserId: boxStorage.read('userId'));
    } else if (GetPlatform.isIOS) {
      await Purchases.setup(Environment.publiciOsRCSDKKey,
          appUserId: boxStorage.read('userId'));
      } else if (GetPlatform.isWeb) {
        await Purchases.setup(Environment.publicStripeRCSDKKey);
    }
    try {
      Offerings offerings = await Purchases.getOfferings();