Process completed with exit code 1.

/home/runner/work/sofia/sofia/./.github/actions/r3bbuild-steps/action.yml (Line: 24, Col: 7): Required property is missing: shell

/home/runner/work/sofia/sofia/./.github/actions/r3bbuild-steps/action.yml: (Line: 28, Col: 1, Idx: 613) - (Line: 28, Col: 2, Idx: 614): 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)