error calling index: index of untyped nil

[sanzenwin]

{{- $secretName := printf "%s" .Values.incomingEmail.password.secret -}}
{{- $incomingEmailPwSecretKey := .Values.incomingEmail.password.key -}}
apiVersion: v1
kind: Secret
metadata:
  name: {{ $secretName }}
type: Opaque
data:
{{- if .Release.IsUpgrade }}
  {{ $incomingEmailPwSecretKey }}: {{ index (lookup "v1" "Secret" .Release.Namespace $secretName).data $incomingEmailPwSecretKey }}
{{ else }} # install operation
  {{ $incomingEmailPwSecretKey }}: {{ randAlphaNum 40 | b64enc }}
{{ end }}

helm diff version: v3.1.3

After doing helm install ... , if I do helm upgrade ..., everything is just ok. But when I do helm diff upgrade ..., I get this error:

Error: Failed to render chart: exit status 1: Error: template: setup/templates/incoming-email-secret.yaml:10:38: executing "setup/templates/incoming-email-secret.yaml" at <index (lookup "v1" "Secret" .Release.Namespace $secretName).data $incomingEmailPwSecretKey>: error calling index: index of untyped nil

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[mumoshu]

@sanzenwin Hey! Does it work with helm template? helm-diff internally calls helm-template to render the chart for diff so it won't work if helm-template doesn't work.

[mumoshu]

To anyone who encountered this- would you mind rerunning helm-diff it with HELM_DIFF_USE_UPGRADE_DRY_RUN=true added via #330, see if it fixes the issue, and report the result here?

[mumoshu]

This looks like a dupe of #263. Let's move.