AccessDeniedUser: arn:aws:sts::701984500217:assumed-role/s3readonly-api-gateway/BackplaneAssumeRoleSession is not authorized to perform: s3:ListBucket on resource: "arn:aws:s3:::ats-webhost-sarithm" because no identity-based policy allows the s3:ListBucket actionW9WVGKBWV5S9911Fh/10dbD03jfVlScQ7W1iPvhvJeLYwC8b3e6h6oTeFZ+f1taz9w2EvKE+0RmTelbNzeXa5DXiuWo=