Hello Everyone,
These errors can appear for a number of different reasons and are likely different for each user. As many users have commented above this is error is essentially saying that the cloud cooks are failing for a particular reason. Recently we made a change that affects how materials are compiled that disallows certain mat functions and nodes that aren’t supported on all platforms. You should be able to find more information on the particular error in the message/output logs. Please ping me if you need any further help/insight/clarification.
Thanks!