tflint v0.54.0 removed `--module` option, and this action specifies `--module` internally, so it fails. https://github.com/terraform-linters/tflint/releases/tag/v0.54.0 https://github.com/suzuki-shunsuke/github-action-tflint/blob/v1.0.0/src/run.ts#L82-L85