For all those who are facing this issue, we managed to resolve it by providing a dummy product component in the live copy pages. Added it to the templates as well so that the new pages will contain it by default.It is just an empty component. Basically the MSM framework checks for the resource 'prod...
We are getting the exact same issue. We are using AEM 6.1 without SP.The rollout happens successfully for the first time and them from second time onwards, we get this exception.