Recently encountered this weird error with a custom image that I build. There is no issue for training and processing job. Just on when I wanted to createmodel.
ClientError: An error occurred (ValidationException) when calling the CreateModel operation: Unsupported manifest media type application/vnd.oci.image.manifest.v1+json for image {image link}. Ensure that valid manifest media type is used for specified image.
Hope that somebody can provide some insight to this problem.