OS input not being using macos correctly

Process completed with exit code 2.

File suffix for macos not being set correctly

Process completed with exit code 2.

/home/runner/work/pkg-action/pkg-action/./action.yml: (Line: 16, Col: 34, Idx: 415) - (Line: 18, Col: 19, Idx: 445): While parsing a block mapping, did not find expected key.

System.ArgumentException: Unexpected type '' encountered while reading 'action manifest root'. The type 'MappingToken' was expected. at GitHub.DistributedTask.ObjectTemplating.Tokens.TemplateTokenExtensions.AssertMapping(TemplateToken value, String objectDescription) at GitHub.Runner.Worker.ActionManifestManager.Load(IExecutionContext executionContext, String manifestFile)