Hi, recently in one of our apps the integration between  RevenueCat and OneSignal is failing, im aware of the changes in the API as stated here 

https://www.revenuecat.com/docs/integrations/third-party-integrations/onesignal#11-user-centric-api-versions-of-onesignal-110-and-above

we have two types of problems first of all some of the request send empty bodies and some others return 

{"errors":s{"title":"No subscription with alias 

We have this integration working in two apps with exactly the same implementation, one is working fine and the other is always failing.

as of today which type should we use with flutter and why one is failing?

Here is a little snippet of the integration:

      final oneSignalUserId = OneSignal.User.pushSubscription.id;

      OneSignal.login(revenueCatUserId);
      OneSignal.User.addAliases(<String, dynamic>{
        'revenuecat_id': revenueCatUserId,
      });

      await _corePurchases.setOneSignalId(oneSignalUserId!)

Thanks.