Found an error INSTALLATION FAILED: <.Chart.ApiVersion> can't evalutate field ApiVersion in type interface {}

[fResult]

> helm install nginx-demo2 day3/my-chart
Error: INSTALLATION FAILED: template: my-chart/templates/deployment.yaml:8:30: executing "my-chart/templates/deployment.yaml" at <.Chart.ApiVersion>: can't evaluate field ApiVersion in type interface {}

The error occurs when install chart which using {{ .Chart.ApiVersion }}:

The autocomplete:

Note

How to solve this:
Using {{ .Chart.APIVersion }} instead of {{ .Chart.ApiVersion }}.
So, right now it is passed.

See: Helm code that is a part of using for generating key/value in the Chart.yaml