Network isolation has been disabled. Network isolation is required for training jobs and models run using resources from AWS Marketplace.
In AWS Console -
In Terraform -
References:
https://docs.aws.amazon.com/sagemaker/latest/dg/security_iam_id-based-policy-examples.html#sagemaker-condition-isolation
https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/sagemaker_model#enable_network_isolation