Thanks.I have actually found out the exact issue with our forms post AEM 6.2 upgrade.We have a custom form action developed on the same lines as "Create and Update Account" OOTB form action (/libs/foundation/components/account/actions/update) which uses com.day.cq.security.AccountManagerFactory for ...

Hi,Did any one find a solution to this issue.We are facing the same after upgrade to AEM 6.2.The forms are on existing pages and so transitioning from OOTB form component to adaptive forms would not be easy.

Were you able to find any solution for this?NewsletterTransformerFactory would be enabled once the AEM instance is restarted.