jx-boot error when using chart

I'm getting this error from jx-boot: -

```
error: error validating "config-root/namespaces/jx/slack/slack-slack-deploy.yaml": error validating data: ValidationError(Deployment.spec): missing required field "selector" in io.k8s.api.apps.v1.DeploymentSpec; if you choose to ignore these errors, turn validation off with --validate=false
```

Using: jx-3 (`version: 3.1.73`)