Error converting YAML to JSON: yaml: invalid map key: map[interface {}]interface {}{"if .Values.configmap.enabled":interface {}(nil)} [kubeval] linter

`{{- if .Values.configmap.enabled }}

apiVersion: v1

kind: ConfigMap

metadata:

name: {{ template "fullname" . }}

namespace: {{ .Values.namespace }}

data:

{{ toYaml $.Values.configmap.data | indent 2 }}

{{- end }}`