exo-actions/buildDockerImage-action/v1/attest-image/action.yml (Line: 33, Col: 7): A sequence was not expected

System.ArgumentNullException: Value cannot be null. (Parameter 'You are using a composite action but there are no steps provided in exo-actions/buildDockerImage-action/v1/attest-image/action.yml.') at GitHub.Runner.Worker.ActionManifestManager.ConvertRuns(IExecutionContext executionContext, TemplateContext templateContext, TemplateToken inputsToken, String fileRelativePath, MappingToken outputs) at GitHub.Runner.Worker.ActionManifestManager.Load(IExecutionContext executionContext, String manifestFile)

Failed to load exo-actions/buildDockerImage-action/v1/attest-image/action.yml