Helm Config-Map with yaml file - kubernetes

Question

I am trying to access a file inside my helm templates as a config map, like below. I get an error as below.
However, it works when my application.yml doesn't have nested objects (Eg - name: test). Any ideas on what I could be doing wrong?
config-map.yaml:
apiVersion: v1
kind: ConfigMap
metadata:
name: {{ .Release.Name }}-configmap
data:
{{.Files.Get “application.yml”}}
application.yml:
some-config:
application:
name: some-application-name
ERROR:
*ConfigMap in version “v1" cannot be handled as a ConfigMap: v1.ConfigMap.Data: ReadString: expects ” or n, but found {, error found in #10 byte of ...|ication”*

Answer 1

Looks like you have an indentation issue on your application.yaml file. Perhaps invalid YAML? If I try your very same files I get the following:
○ → helm template ./mychart -x templates/configmap.yaml
---
# Source: mychart/templates/configmap.yaml
apiVersion: v1
kind: ConfigMap
metadata:
name: release-name-configmap
data:
some-config:
application:
name: some-application-name

Answer 2

As per documentation:
Templates should be indented using two spaces (never tabs).
Template directives should have whitespace after the opening braces and before the closing braces.
finally it should looks like:
{{ .Files.Get "application.yml" | nindent 2 }}
or
{{- .Files.Get "application.yml" | nindent 2 }}
to chomp whitespace on the left