/home/runner/work/Prototype/Prototype/./.github/workflows/composite/buildSetup/action.yml: (Line: 13, Col: 5, Idx: 463) - (Line: 13, Col: 5, Idx: 463): While scanning a simple key, could not find expected ':'.

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)

Failed to load /home/runner/work/Prototype/Prototype/./.github/workflows/composite/buildSetup/action.yml