Error when configuring `gitlab.webservice.service.loadBalancerSourceRanges` and `gitlab.webservice.service.type`

Summary

On the helm chart 4.8.0, we added the feature to change the service type of the webservice deployment.

However, one of our customers encountered an error when setting the following values:

gitlab:
  webservice:
    service:
      loadBalancerSourceRanges:
      - 10.0.0.0/8
      type: LoadBalancer

Error: template: gitlab/charts/gitlab/charts/webservice/templates/service.yaml:2:4: executing "gitlab/charts/gitlab/charts/webservice/templates/service.yaml" at <include "webservice.datamodel.prepare" $>: error calling include: template: gitlab/charts/gitlab/charts/webservice/templates/_datamodel.tpl:17:22: executing "webservice.datamodel.prepare" at <$blank.ingress>: wrong type for value; expected map[string]interface {}; got interface {}

Steps to reproduce

• Add this in your values.yaml file:

gitlab:
  webservice:
    service:
      loadBalancerSourceRanges:
      - 10.0.0.0/8
      type: LoadBalancer

• Run helm template --values values.yaml --version 4.8.0 gitlab/gitlab
  • This also happens on the latest version of the Helm chart

Configuration used

gitlab:
  webservice:
    service:
      loadBalancerSourceRanges:
      - 10.0.0.0/8
      type: LoadBalancer

Current behavior

Failing with an error:

Error: template: gitlab/charts/gitlab/charts/webservice/templates/service.yaml:2:4: executing "gitlab/charts/gitlab/charts/webservice/templates/service.yaml" at <include "webservice.datamodel.prepare" $>: error calling include: template: gitlab/charts/gitlab/charts/webservice/templates/_datamodel.tpl:17:22: executing "webservice.datamodel.prepare" at <$blank.ingress>: wrong type for value; expected map[string]interface {}; got interface {}

Expected behavior

Should be successfully installed.

Versions

• Chart: 4.8.0 (and later) (Fixed in 4.10.0)

Relevant logs

Error: template: gitlab/charts/gitlab/charts/webservice/templates/service.yaml:2:4: executing "gitlab/charts/gitlab/charts/webservice/templates/service.yaml" at <include "webservice.datamodel.prepare" $>: error calling include: template: gitlab/charts/gitlab/charts/webservice/templates/_datamodel.tpl:17:22: executing "webservice.datamodel.prepare" at <$blank.ingress>: wrong type for value; expected map[string]interface {}; got interface {}