Trying to use entrypoint new vpc template returns error immediately

[tonym24]

Opened a case with AWS support this morning as the template for Deploy Apache Superset into a new VPC is not working and returning an error CREATE_FAILED immediately.

Status reason:
S3 error: Access Denied For more information check http://docs.aws.amazon.com/AmazonS3/latest/API/ErrorResponses.html

AWS support identified a potential cause is the template within the template is not accessible:
https://superset-sandbox-quickstart.s3.us-east-1.amazonaws.com/quickstart-apache-superset/submodules/quickstart-aws-vpc/templates/aws-vpc.template.yaml

Link to error screencap: https://imgur.com/a/2CJmftN