helm lint erroring for [ERROR] templates/serviceaccount.yaml: unable to parse YAML: invalid Yaml document separator: apiVersion: rbac.authorization.k8s.io/v1

[vynu]

Helm Chart Version

1.4.0

What step the error happened?

On deploy

Relevant information

problem statement:
helm lint ./airbyte for airbyte helm chart 1.4.0 causing the below issue
[ERROR] templates/serviceaccount.yaml: unable to parse YAML: invalid Yaml document separator: apiVersion: rbac.authorization.k8s.io/v1

Observations:
compared to previous release 1.2.0 there is a particular code block in templates/serviceaccount.yaml causing issue
{{- if not (default false .Values.serviceAccount.denyNodeViewerRole) -}}

proposed solution:
{{ if not (default false .Values.serviceAccount.denyNodeViewerRole) }} get rid of - its working fine

whats weird:
helm template command running fine without any issues

Relevant log output

helm lint ./airbyte
==> Linting ./airbyte
[INFO] Chart.yaml: icon is recommended
[WARNING] templates/env-configmap.yaml: document starts with an illegal indent: " # default to empty dict if airbyteYml is undefined", which may cause parsing problems
[ERROR] templates/serviceaccount.yaml: unable to parse YAML: invalid Yaml document separator: apiVersion: rbac.authorization.k8s.io/v1