このエラーメッセージに関する原因と対処に関して説明します。
エラーメッセージ(英語)：
cloudformation invalid template resource property
対処
関連リンク
CloudFormation の無効なテンプレートのリソース ... - AWS - Amazon.com
https://aws.amazon.com/jp/premiumsupport/knowledge-center/cloudformation-invalid-template-resource-p・・・
linux - AWS Cloudformation: Invalid template resource property ...
https://serverfault.com/questions/786420/aws-cloudformation-invalid-template-resource-property-error・・・
amazon web services - Condition for Cloudformation Resource ...
https://serverfault.com/questions/910705/condition-for-cloudformation-resource
amazon web services - Cloudformation Template showing all ...
https://serverfault.com/questions/881102/cloudformation-template-showing-all-nested-changing-with-nu・・・
docker - Template validation error: Role arn:aws:iam is invalid ...
https://serverfault.com/questions/854219/template-validation-error-role-arnawsiam-is-invalid-or-cann・・・
amazon ec2 - How do I specify in an AWS Cloudformation ...
https://serverfault.com/questions/261336/how-do-i-specify-in-an-aws-cloudformation-template-that-my-・・・
linux - AWS Cloudformation: Invalid template resource property error ...
https://serverfault.com/questions/786420/aws-cloudformation-invalid-template-resource-property-error・・・
amazon web services - Cloudformation Template showing all nested ...
https://serverfault.com/questions/881102/cloudformation-template-showing-all-nested-changing-with-nu・・・
docker - Template validation error: Role arn:aws:iam is invalid or ...
https://serverfault.com/questions/854219/template-validation-error-role-arnawsiam-is-invalid-or-cann・・・
amazon web services - Condition for Cloudformation Resource ...
https://serverfault.com/questions/910705/condition-for-cloudformation-resource?rq=1